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Universe - Blog Posts

6 years ago
So... Here's This I Know It Looks Like A Three Year Old Colored It But Oh Well Also I Hate Summer School
So... Here's This I Know It Looks Like A Three Year Old Colored It But Oh Well Also I Hate Summer School
So... Here's This I Know It Looks Like A Three Year Old Colored It But Oh Well Also I Hate Summer School

So... Here's this I know it looks like a three year old colored it but oh well Also I hate summer school (only cause i have to wake up early)


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3 months ago

Scientists believe they've found evidence of what was once an ocean on Mars. Check out the shoreline on mars!

Scientists Believe They've Found Evidence Of What Was Once An Ocean On Mars. Check Out The Shoreline

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7 years ago
é Assim Crianças, Que Surgem Os Buracos Negros! E Também é Por Isso Que Ela Anda Descalça…

é assim crianças, que surgem os buracos negros! E também é por isso que ela anda descalça…

Achava que era aquela teoria do Stephen Hawking?

é Assim Crianças, Que Surgem Os Buracos Negros! E Também é Por Isso Que Ela Anda Descalça…

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7 years ago
Apresentação Oficial Dos Personagens Do Blog! Nad, Death, Life E Universe!

Apresentação oficial dos personagens do blog! Nad, Death, Life e Universe!

Evolui um pouco na mesa digitalizadora! Uhhuuuu! \o/ 


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2 years ago
Got These Pictures I Took Of The Moon Through My Telescope If Anyone Wants To See Them
Got These Pictures I Took Of The Moon Through My Telescope If Anyone Wants To See Them

Got these pictures I took of the moon through my telescope if anyone wants to see them


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1 year ago

Look how beautiful this is!

I know I don't usually reblog but this was necessary

M8, Ripples Of The Lagoon

M8, Ripples of the Lagoon


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1 month ago

What are people anyway? If the world is not what we see, why do we care how others see us? Why do we ignore our own existence as consciousness and consciously let our unconscious shape us to the views and preferences of others?

Humans have practically dominated the planet.

Stars and planets are dying, galaxies are fading.

Why do I still care?

Why do I still feel so small compared to others?

Coward.

No tags or money, this post doesn't matter

Nothing matters.

You are nothing on the cosmic scale, your worries, insecurities, that swallowing everything... You are a damn coward afraid of sinking into your own existence.

And that's okay.

You don't need to feel small over such trivial things as a threat, an expectation or the simple need to survive in this society. Each of us has a universe within us, It would be a complete waste if you continued to oppress and hide yourself. For you are an incredible thing.


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1 month ago

"Jupiter was meant to be a star but failed" or jupiter was a very successful planet? stop downgrading my man 🥀🥀


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2 weeks ago

Nature is designed in a smart way so as to not destroy itself right? This means there are certain limitations to what we can do, for example

Assuming we live in a world where time travel is possible:

The Grandfather paradox (or something alike) will be created no matter how careful we are if we were to be able to time travel. But since physics is a well functioning logical model, there must be a system or mechanism to ensure otherwise.

For example, like in Avengers Endgame it’s stated that you can’t change the present or future by changing the past because the past becomes the present you’s future. This means that the grandfather paradox is not possible (basically the entire last season of the umbrella academy 😌).

So it must mean that every time we travel into the past, and change something, a new timeline or new universe with a slightly different detail is created, which must be the reason the series “Loki” had so many time-lines?


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9 months ago

I heard Saturn is losing it's rings. She's going through a divorce😭


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8 years ago

The Sohmas (Fruits Basket) as Birthstones based on the month corresponding with their cursed member of the Chinese zodiac:

I decided to make this because to me “Fruits Basket” was the “Steven Universe” for me before I even watched the latter show. Tohru is kind of like Steven in a way, healing lost broken things/people with their kindness and loving nature. Tohru even has a dead mother and lives with 3 other people. That’s pretty much it though.

One reason why I’m doing this is because I wanted to make a “Steven Universe” version of this anime since anime is definitely smiled upon in that show. So in my headcanon the show in that universe will be called Fruit Salad (call me out if you can think of a better title). Instead of turning into animals when stressed or hugged by the opposite sex, they will turn into their true form as aliens from another galaxy. So there’s no need to worry them being naked when they change back. That’s pretty much all I got for now considering it’s just a headcanon of an anime within a cartoon show.

 So here’s the list so far.

Hatsuharu – Garnet (Gem Placement: nose, forehead, chest, left hand, or right hand)

Kisa – Amethyst (Gem Placement: stomach or back)

Momiji – Aquamarine (Gem Placement: chest, stomach, or back)

Hatori – Diamond (Gem Placement: one of his eyes, forehead, or back)

Ayame  - Emerald (Gem Placement: chest, neck, tongue, or uvula)

Isuzu – Pearl (Gem Placement: chest or nose)

Hiro – Ruby (Gem Placement: forehead or neck)

Ritsu – Peridot (Gem Placement: stomach or back)

Kureno – Sapphire (Gem Placement: stomach)

Shigure – Opal (Gem Placement: forehead or neck)

Kagura – Topaz (Gem Placement: chest, right hand, or left hand)

Yuki – Turquoise (Gem Placement: forehead)

Kyo – Bloodstone (because of his beads for is bracelet were from bones and some were dipped with blood. Not to mention that it was a stand-in for the March birthstone. This is one of the closest months to February, the month of the Tiger. Tiger being a feline that should be quite fitting for the unofficial year of the cat) (Gem Placement: Nose, chest, right hand, or left hand)

Akito -  Serpentine (SNEOPLE!) (Gem Placement: forehead)

 This are not set in stone (pun intended). This is just a basis for what their gems need to be to fit with their cursed years. If you want to help find a gem that truly fits them and still corresponds with their animal month. Here’s something to help. Just search the stones for their following signs (except for Kyo and Akito. They’re the rebels).

 Hatsuharu – Capricorn

Kisa – Aquarius

Momiji – Pisces

Hatori – Aries

Ayame  - Taurus

Isuzu – Gemini

Hiro – Cancer

Ritsu – Leo

Kureno – Virgo

Shigure – Libra

Kagura – Scorpio

Yuki – Sagittarius

 Just to be clear I’m going by their cursed dates, not birthdates (if I was there would have been 4 rubies and 2 garnets). Be free to help decide where all their gem placements should be. Just keep in my mind that “gem placements = personality influence” is the unspoken canon of the Steven Universe show.

Thank you for reading and have a blessed day.

�/��x�


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6 years ago
Это не так шикарно как в позах, но это не плохо. Считайте
Это не так шикарно как в позах, но это не плохо. Считайте
Это не так шикарно как в позах, но это не плохо. Считайте
Это не так шикарно как в позах, но это не плохо. Считайте

Это не так шикарно как в позах, но это не плохо. Считайте альт.версия, где Цекел-Кан смог сбежать от Картесса, прибыв уже в Испанию, но поплатился глазам (знаю, банально) Мысль 1 не дала уснуть "Если б было продолжение, то каким бы он был?" переживала больше за жреца, хотела чтобы он выжил. Вот в моей версии он жив. На этот раз жаждет отомстить проходимцам, вернуться в город с новыми силами и вернуть обычаи

Если мне это идея дальше будет нравится, то буду обновлять


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1 month ago

i think i believe in some kind if higher power, its not like, god, or anything like that. recently ive just been noticing that things are happening that align perfectly with my goals and my needs. like, at work, i had to do a job and i needed a certain number of things to do it and i grabbed the perfect amount first try?!?

(tw ed mentioned under cut)

or, like today, i was going to skip lunch but as i was leaving the house my friend asked me if i wanted some of the curry her mum made and its like. okay, maybe the universe wants me to eat today?!?


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4 years ago
You're Spoiling Us, So I'm Spoiling You.

You're spoiling us, so I'm spoiling you.

'A buon intenditor poche parole', says an Italian saying, dear @thesarcasticknightblr . Not really sure, but I think it could be translate as 'A word is enough to the wise'.


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2 years ago

Do You Believe in Fate/Destiny?

I have gone back and forth on this question for over 15 years. I used to think like this: when the good fate happens, yes! When the bad fate happens, no. I find that the words Fate or Destiny are rooted in positivity and materialistic values, and I think many others will currently (or used to!) have the same belief that I once did that the Fates only arrive on the breeze with good news, never the bad or ugly. The more I delved into my practice by pouring time and soul into research, meditation, spirituality and witchcraft, the more I understood that fate or destiny isn’t always the light side of life, it encompasses the dark too. Do I now believe it exists? Wholly.

At this stage into my practice and reading, I have become aware that there are certain soul milestones we want to achieve before we come to Earth, but I don’t think these lessons are linear. They aren’t “supposed” to happen in a certain way at a specific time with the perfect people. They occur when they can, based on the choices that form the paths we take in life. Every choice we make matters. Each one makes an impact in one way or another, which means they can change the course of our futures and therefore the way in which we receive Divine Timing. The lessons will come either way, but the circumstances around it may change to lean more heavily into the positive or even perhaps the negative. We must learn the lesson either way. If we’re clever about it, we will able to check a few teachings off in one fell swoop and make a great leap forwards into greater circumstances than thought possible. A destiny that aligns with our heart and soul.

I don’t believe that fate works to give us what we want, I believe it does so to give us what we need. They are two very different things. For example, we may want a big, beautiful house in a big, beautiful neighbourhood, but what we need may be a small, rickety cabin where our soul feels comforted and warm. We may want lots of money to buy the things we think we “need”, but what we actually need is basic financial security to traverse safely through the human experience. It is wise to look between the lines of wants vs needs and act accordingly. Can we take a step back and ask ourselves what life lesson do we need to learn right now? Is there something we can do to change what our brains want into something our souls crave? Are we able to see so clearly that we can take charge of the smaller lessons too in the shadows of the large?

Sometimes it’s difficult to figure out what our current life lesson is, as it can arrive seemingly out of nowhere - this is where practices such as Tarot and Meditation come into play to help work it out. Sometimes it can takes weeks, months or even years to go through a soul milestone and it won’t always appear in the preferred way. But when it does arrive, it’s imperative to welcome it in and embrace the changes whether there are highs or lows; it’s an opportunity for growth no matter what. We are also able to ask the Universe to speed these fates along to aid us in reaching our highest good, and it will do so promptly! We are the Universe experiencing itself come alive; it wants us to traverse unknown territories, explore our feelings and wonderings, achieve great things, fall down in self-pity, move forwards, step backwards. Ask for help to speed things along and see where you end up.

For many big “fate/destiny” stepping stones, it can leave you feeling weak, blindsided and sat at rock bottom. But from the ashes rises the phoenix. Your plumage will be brighter, healthier, thicker. Your spirit and energy will be stronger, resilient and more capable of setbacks. Our soul will be craving knowledge which means we will want to experience more, get lost more, accept challenges more, step out of our comfort more. It’s a funny thing because at some point in the future unknown, we will find ourselves smiling through it all. We will know that we can join the predestined as an equal, a willing participant and a master of our fate.

Do You Believe In Fate/Destiny?

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5 years ago
Luffy That U Bro???? 😁 Legit Tho I Love This Movie So Much❤❤ It Was So Beautiful And The Soundtrack
Luffy That U Bro???? 😁 Legit Tho I Love This Movie So Much❤❤ It Was So Beautiful And The Soundtrack
Luffy That U Bro???? 😁 Legit Tho I Love This Movie So Much❤❤ It Was So Beautiful And The Soundtrack
Luffy That U Bro???? 😁 Legit Tho I Love This Movie So Much❤❤ It Was So Beautiful And The Soundtrack
Luffy That U Bro???? 😁 Legit Tho I Love This Movie So Much❤❤ It Was So Beautiful And The Soundtrack
Luffy That U Bro???? 😁 Legit Tho I Love This Movie So Much❤❤ It Was So Beautiful And The Soundtrack

Luffy that u bro???? 😁 Legit tho i love this movie so much❤❤ it was so beautiful and the soundtrack was absolutely amazing❤❤❤❤❤❤❤❤


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5 years ago
#art #alive #artist #nature #faerie #fairy #plantsofinstagram #plants #flowers #tattoo #meadow#meditation

#art #alive #artist #nature #faerie #fairy #plantsofinstagram #plants #flowers #tattoo #meadow#meditation #lake #onewithnature #universe #calmn #mountains #grapes #days #random #tuesday #evening #sketchbook #sketch #pencildrawing #blackandwhite #chaoticenergy https://www.instagram.com/p/B20DMxJg2Ci/?igshid=1s69qaca5i3fr


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1 year ago

"OGGI VORREI" , l'ultimo singolo dell'album "Amore Eterno" di Vito Rotolo, disponile ora su Youtube e Spotify.

Link Youtube 👇❤️ (Like and share)


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2 days ago

Seeing the Invisible Universe

A black circle is surrounded by arcs of red, blue, orange, and white. Farther out from the circle are blotches of red, blue, orange, and white representing celestial objects. Credit: NASA, ESA, and D. Coe, J. Anderson, and R. van der Marel (STScI)

This computer-simulated image shows a supermassive black hole at the core of a galaxy. The black region in the center represents the black hole’s event horizon, beyond which no light can escape the massive object’s gravitational grip. The black hole’s powerful gravity distorts space around it like a funhouse mirror. Light from background stars is stretched and smeared as it skims by the black hole. You might wonder — if this Tumblr post is about invisible things, what’s with all the pictures? Even though we can’t see these things with our eyes or even our telescopes, we can still learn about them by studying how they affect their surroundings. Then, we can use what we know to make visualizations that represent our understanding.

When you think of the invisible, you might first picture something fantastical like a magic Ring or Wonder Woman’s airplane, but invisible things surround us every day. Read on to learn about seven of our favorite invisible things in the universe!

1. Black Holes

This short looping animation starts with a white flash as a small white circle, representing a star, gets near a small black circle, representing a black hole. The small white circle is torn apart into billions of small particles that get whipped into an oval coiling around the black hole from the right to the left. One trailing stream is flung in an arc to the left side of the animation while the end closest to the black hole wraps around it in several particle streams. Thousands of flecks from the outermost edge of the streams fly farther away from the black hole as the animation progresses, while the inner stream continues to loop. Two jets of fast-moving white particles burst out of the black hole from the top and bottom. The white speckled outbursts get brighter as the animation concludes. Credit: NASA’s Goddard Space Flight Center/Chris Smith (USRA/GESTAR)

This animation illustrates what happens when an unlucky star strays too close to a monster black hole. Gravitational forces create intense tides that break the star apart into a stream of gas. The trailing part of the stream escapes the system, while the leading part swings back around, surrounding the black hole with a disk of debris. A powerful jet can also form. This cataclysmic phenomenon is called a tidal disruption event.

You know ‘em, and we love ‘em. Black holes are balls of matter packed so tight that their gravity allows nothing — not even light — to escape. Most black holes form when heavy stars collapse under their own weight, crushing their mass to a theoretical singular point of infinite density.

Although they don’t reflect or emit light, we know black holes exist because they influence the environment around them — like tugging on star orbits. Black holes distort space-time, warping the path light travels through, so scientists can also identify black holes by noticing tiny changes in star brightness or position.

2. Dark Matter

In front of a black background, there are millions of glowing green dots. They form a fine, wispy web stretching across the image, like old cobwebs that have collected dust. Over time, more dots collect at the vertices of the web. As the web gets thicker and thicker, the vertices grow and start moving toward each other and toward the center. The smaller dots circle the clumps, like bees buzzing around a hive, until they are pulled inward to join them. Eventually, the clumps merge to create a glowing green mass. The central mass ensnares more dots, coercing even those from the farthest reaches of the screen to circle it. Credit: Simulation: Wu, Hahn, Wechsler, Abel (KIPAC), Visualization: Kaehler (KIPAC)

A simulation of dark matter forming large-scale structure due to gravity.

What do you call something that doesn’t interact with light, has a gravitational pull, and outnumbers all the visible stuff in the universe by five times? Scientists went with “dark matter,” and they think it's the backbone of our universe’s large-scale structure. We don’t know what dark matter is — we just know it's nothing we already understand.

We know about dark matter because of its gravitational effects on galaxies and galaxy clusters — observations of how they move tell us there must be something there that we can’t see. Like black holes, we can also see light bend as dark matter’s mass warps space-time.

3. Dark Energy

An animation on a black rectangular background. On the left of the visual is a graph. The y-axis reads “Expansion Speed.” The x-axis is labeled “Time.” At the origin, the x-axis reads, “10 billion years ago.” Halfway across the x-axis is labeled “7 Billion years ago.” At the end of the x-axis is labeled “now.” A line on the graph starts at the top of the y-axis. It slopes down to the right, linearly, as if it were going to draw a straight line from the top left corner of the graph to the bottom right corner of the graph. Around the 7-billion mark, the line begins to decrease in slope very gradually. Three quarters of the way across the x-axis and three quarters of the way down the y-axis, the line reaches a minimum, before quickly curving upward. It rapidly slopes upward, reaching one quarter from the top of the y-axis as it reaches the end of the x-axis labeled “now.” At the same time, on the right hand of the visual is a tiny dark blue sphere which holds within it glowing lighter blue spheres — galaxies and stars — and a lighter blue webbing. As the line crawls across the graph, the sphere expands. At first, its swelling gently slows, corresponding to the decreasing line on the graph. As the line arcs back upward, the sphere expands rapidly until it grows larger than the right half of the image and encroaches on the graph. Credit: NASA's Goddard Space Flight Center

Animation showing a graph of the universe’s expansion over time. While cosmic expansion slowed following the end of inflation, it began picking up the pace around 5 billion years ago. Scientists still aren’t sure why.

No one knows what dark energy is either — just that it’s pushing our universe to expand faster and faster. Some potential theories include an ever-present energy, a defect in the universe’s fabric, or a flaw in our understanding of gravity.

Scientists previously thought that all the universe’s mass would gravitationally attract, slowing its expansion over time. But when they noticed distant galaxies moving away from us faster than expected, researchers knew something was beating gravity on cosmic scales. After further investigation, scientists found traces of dark energy’s influence everywhere — from large-scale structure to the background radiation that permeates the universe.

4. Gravitational Waves

In this animation, two small black circles, representing black holes, orbit one another in a circular counter-clockwise motion. There is a square grid pattern behind them. Around each black hole, a purple haze glows, getting more transparent farther out from the black holes. The haze creates a circle about the size of the black holes’ orbits. Trailing in an arc out from each black hole, an orange hazy strip curls around the frame as the black holes’ orbits circle, like the spiral of a snail shell. The orange strips move farther from the black holes over time, and as they pass over the gridded background, the background warps so that the grid-lines under the stripes appear to bump up. Credit: NASA's Goddard Space Flight Center Conceptual Image Lab

Two black holes orbit each other and generate space-time ripples called gravitational waves in this animation.

Like the ripples in a pond, the most extreme events in the universe — such as black hole mergers — send waves through the fabric of space-time. All moving masses can create gravitational waves, but they are usually so small and weak that we can only detect those caused by massive collisions.  Even then they only cause infinitesimal changes in space-time by the time they reach us. Scientists use lasers, like the ground-based LIGO (Laser Interferometer Gravitational-Wave Observatory) to detect this precise change. They also watch pulsar timing, like cosmic clocks, to catch tiny timing differences caused by gravitational waves.

This animation shows gamma rays (magenta), the most energetic form of light, and elusive particles called neutrinos (gray) formed in the jet of an active galaxy far, far away. The emission traveled for about 4 billion years before reaching Earth. On Sept. 22, 2017, the IceCube Neutrino Observatory at the South Pole detected the arrival of a single high-energy neutrino. NASA’s Fermi Gamma-ray Space Telescope showed that the source was a black-hole-powered galaxy named TXS 0506+056, which at the time of the detection was producing the strongest gamma-ray activity Fermi had seen from it in a decade of observations.

5. Neutrinos

Seeing The Invisible Universe

This animation shows gamma rays (magenta), the most energetic form of light, and elusive particles called neutrinos (gray) formed in the jet of an active galaxy far, far away. The emission traveled for about 4 billion years before reaching Earth. On Sept. 22, 2017, the IceCube Neutrino Observatory at the South Pole detected the arrival of a single high-energy neutrino. NASA’s Fermi Gamma-ray Space Telescope showed that the source was a black-hole-powered galaxy named TXS 0506+056, which at the time of the detection was producing the strongest gamma-ray activity Fermi had seen from it in a decade of observations.

Because only gravity and the weak force affect neutrinos, they don’t easily interact with other matter — hundreds of trillions of these tiny, uncharged particles pass through you every second! Neutrinos come from unstable atom decay all around us, from nuclear reactions in the Sun to exploding stars, black holes, and even bananas.

Scientists theoretically predicted neutrinos, but we know they actually exist because, like black holes, they sometimes influence their surroundings. The National Science Foundation’s IceCube Neutrino Observatory detects when neutrinos interact with other subatomic particles in ice via the weak force.

6. Cosmic Rays

Earth’s horizon from space divides this animation in half from the top-left corner to the bottom-right corner. The slightly curved surface glows faintly white into the inky black space that takes up the other half of the frame. Earth is primarily blue, covered in soft patchy white clouds that glow soft yellow. Hundreds of small white streaks rain down diagonally from the right toward Earth. As they reach the faint white glow, they suddenly break into thousands of smaller particles that shower down onto the planet. Credit: NASA's Goddard Space Flight Center

This animation illustrates cosmic ray particles striking Earth's atmosphere and creating showers of particles.

Every day, trillions of cosmic rays pelt Earth’s atmosphere, careening in at nearly light-speed — mostly from outside our solar system. Magnetic fields knock these tiny charged particles around space until we can hardly tell where they came from, but we think high energy events like supernovae can accelerate them. Earth’s atmosphere and magnetic field protect us from cosmic rays, meaning few actually make it to the ground.

Though we don’t see the cosmic rays that make it to the ground, they tamper with equipment, showing up as radiation or as “bright” dots that come and go between pictures on some digital cameras. Cosmic rays can harm astronauts in space, so there are plenty of precautions to protect and monitor them.

7. (Most) Electromagnetic Radiation

A diagram reading “electromagnetic spectrum.” The diagram consists primarily of a rectangle that stretches across the width of the image. The rectangle is broken into six sections labelled left to right, “gamma,” then “x-ray,” then “ultraviolet,” then “visible,” then “infrared,” then “microwave,” and finally “radio.” The sections are not all the same size, with visible being the smallest by far, then gamma ray, then x-ray, then ultraviolet, microwave, radio, and finally infrared being the longest section. The individual sections are divided further into five sections that create color gradients. Gamma, x-ray, and microwave are gradients of grey. Ultraviolet is a gradient from a pinkish purple on the left to purple on the right. Infrared is a gradient from red on the left to orange on the right. The visible section creates a rainbow, going from purple, to blue, green, yellow, and finally red. Above each section is a squiggly vertical line. Each section has squiggly lines taking up the same vertical space but they have larger and larger curves going from left to right, with gamma having the smallest amplitude and wavelength and radio having the largest. Credit: NASA, ESA, CSA, Joseph Olmsted (STScI)

The electromagnetic spectrum is the name we use when we talk about different types of light as a group. The parts of the electromagnetic spectrum, arranged from highest to lowest energy are: gamma rays, X-rays, ultraviolet light, visible light, infrared light, microwaves, and radio waves. All the parts of the electromagnetic spectrum are the same thing — radiation. Radiation is made up of a stream of photons — particles without mass that move in a wave pattern all at the same speed, the speed of light. Each photon contains a certain amount of energy.

The light that we see is a small slice of the electromagnetic spectrum, which spans many wavelengths. We frequently use different wavelengths of light — from radios to airport security scanners and telescopes.

Visible light makes it possible for many of us to perceive the universe every day, but this range of light is just 0.0035 percent of the entire spectrum. With this in mind, it seems that we live in a universe that’s more invisible than not! NASA missions like NASA's Fermi, James Webb, and Nancy Grace Roman  space telescopes will continue to uncloak the cosmos and answer some of science’s most mysterious questions.

Make sure to follow us on Tumblr for your regular dose of space!


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2 months ago

5 Unpredictable Things Swift Has Studied (and 1 It’s Still Looking For)

Our Neil Gehrels Swift Observatory — Swift for short — is celebrating its 20th anniversary! The satellite studies cosmic objects and events using visible, ultraviolet, X-ray, and gamma-ray light. Swift plays a key role in our efforts to observe our ever-changing universe. Here are a few cosmic surprises Swift has caught over the years — plus one scientists hope to see.

This sequence shows X-rays from the initial flash of GRB 221009A that could be detected for weeks as dust in our galaxy scattered the light back to us. This resulted in the appearance of an extraordinary set of expanding rings, here colored magenta, with a bright yellow spot at the center. The images were captured over 12 days by the X-ray Telescope aboard NASA’s Neil Gehrels Swift Observatory. Credit: NASA/Swift/A. Beardmore (University of Leicester)

#BOAT

Swift was designed to detect and study gamma-ray bursts, the most powerful explosions in the universe. These bursts occur all over the sky without warning, with about one a day detected on average. They also usually last less than a minute – sometimes less than a few seconds – so you need a telescope like Swift that can quickly spot and precisely locate these new events.

In the fall of 2022, for example, Swift helped study a gamma-ray burst nicknamed the BOAT, or brightest of all time. The image above depicts X-rays Swift detected for 12 days after the initial flash. Dust in our galaxy scattered the X-ray light back to us, creating an extraordinary set of expanding rings.

This gif illustrates what happens when an unlucky star strays too close to a monster black hole. Gravitational forces create intense tides that break the star apart into a stream of gas. The trailing part of the stream escapes the system, while the leading part swings back around, surrounding the black hole with a disk of debris. This cataclysmic phenomenon is called a tidal disruption event. This image is watermarked “Artist’s concept.” Credit: NASA’s Goddard Space Flight Center/Chris Smith (USRA/GESTAR)

Star meets black hole

Tidal disruptions happen when an unlucky star strays too close to a black hole. Gravitational forces break the star apart into a stream of gas, as seen above. Some of the gas escapes, but some swings back around the black hole and creates a disk of debris that orbits around it.

These events are rare. They only occur once every 10,000 to 100,000 years in a galaxy the size of our Milky Way. Astronomers can’t predict when or where they’ll pop up, but Swift’s quick reflexes have helped it observe several tidal disruption events in other galaxies over its 20-year career.

This gif illustrates various features of a galaxy's outburst. The black hole in the center is surrounded by a puffy orange disk of gas and dust. Above and below the center of the disk are blue cones representing the corona. At the start of the sequence, a flash of purple-white light travels from the edges of the disk inward, until the whole thing is illuminated. That light fades and then there is a flare of blue light above and below the center. This image is watermarked “Artist’s concept.” Credit: NASA’s Goddard Space Flight Center

Active galaxies

Usually, we think of galaxies – and most other things in the universe – as changing so slowly that we can’t see the changes. But about 10% of the universe’s galaxies are active, which means their black hole-powered centers are very bright and have a lot going on. They can produce high-speed particle jets or flares of light. Sometimes scientists can catch and watch these real-time changes.

For example, for several years starting in 2018, Swift and other telescopes observed changes in a galaxy’s X-ray and ultraviolet light that led them to think the galaxy’s magnetic field had flipped 180 degrees.

This animation depicts a giant flare on the surface of a magnetar. The object’s glowing surface, covered in swirls of lighter and darker blue, fills the lower right corner of the image. The powerful magnetic field surrounding this stellar corpse is represented by thin white speckled loops that arc off the surface and continue past the edges of the image. A starquake rocks the surface of the magnetar, abruptly affecting its magnetic field and producing a quick, powerful pulse of X-rays and gamma rays, represented by a magenta glow. The event also ejects electrons and positrons traveling at about 99% the speed of light. These are represented by a blue blob, which follows the gamma rays heading towards the upper left and off-screen. The image is watermarked “Artist’s concept.” Credit: NASA’s Goddard Space Flight Center/Chris Smith (USRA/GESTAR)

Magnetic star remnants

Magnetars are a type of neutron star, a very dense leftover of a massive star that exploded in a supernova. Magnetars have the strongest magnetic fields we know of — up to 10 trillion times more intense than a refrigerator magnet and a thousand times stronger than a typical neutron star’s.

Occasionally, magnetars experience outbursts related to sudden changes in their magnetic fields that can last for months or even years. Swift detected such an outburst from a magnetar in 2020. The satellite’s X-ray observations helped scientists determine that the city-sized object was rotating once every 10.4 seconds.

This gif shows six snapshots of comet 2I/Borisov as it traveled through our solar system. They were captured with the Ultraviolet/Optical Telescope aboard NASA’s Neil Gehrels Swift Observatory. The first four images are a dark purple color with streaks of white traveling across them. Borisov is a faint white smudge in the center. The fifth image has a blue background with the same white streaks. The last image is just the blue background. The image is watermarked with “Ultraviolet” on the left side. On the right are rotating labels showing the date of each snapshot: Sept 27, Nov 1, Dec 1, Dec 21, Jan 14, Feb 17. Credit: NASA/Swift/Z. Xing et al. 2020

Comets

Swift has also studied comets in our own solar system. Comets are town-sized snowballs of frozen gases, rock, and dust. When one gets close to our Sun, it heats up and spews dust and gases into a giant glowing halo.

In 2019, Swift watched a comet called 2I/Borisov. Using ultraviolet light, scientists calculated that Borisov lost enough water to fill 92 Olympic-size swimming pools! (Another interesting fact about Borisov: Astronomers think it came from outside our solar system.)

This animation shows a spacecraft, NASA’s Neil Gehrels Swift Observatory, in orbit above Earth. Swift is composed of a long cylinder at the center, wrapped in golden foil. At the front of the cylinder is a silver sunshade protruding over several telescopes. Two black solar arrays are attached on either side of the cylinder, extending like wings. The animation begins with a view of Swift with Earth in the background. Then the camera pans along one side of the spacecraft until Swift is seen looking out into space. Credit: NASA's Goddard Space Flight Center Conceptual Image Lab

What's next for Swift?

Swift has studied a lot of cool events and objects over its two decades, but there are still a few events scientists are hoping it’ll see.

Swift is an important part of a new era of astrophysics called multimessenger astronomy, which is where scientists use light, particles, and space-time ripples called gravitational waves to study different aspects of cosmic events.

A cartoon of different cosmic messengers. On top are particles, which show as four different colored dots that have trails appearing behind them, evoking movement. In the middle is light, which is shown as a wave moving through space. On the bottom are gravitational waves. These are shown as a series of ovals that expand and contract in sequence to evoke the feeling of an elastic tube that is growing and shrinking in width. The image is watermarked “Artist’s concept.” Credit: NASA’s Goddard Space Flight Center

In 2017, Swift and other observatories detected light and gravitational waves from the same event, a gamma-ray burst, for the first time. But what astronomers really want is to detect all three messengers from the same event.

As Swift enters its 20th year, it’ll keep watching the ever-changing sky.

Keep up with Swift through NASA Universe on X, Facebook, and Instagram. And make sure to follow us on Tumblr for your regular dose of space!


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8 months ago

A Tour of Cosmic Temperatures

We often think of space as “cold,” but its temperature can vary enormously depending on where you visit. If the difference between summer and winter on Earth feels extreme, imagine the range of temperatures between the coldest and hottest places in the universe — it’s trillions of degrees! So let’s take a tour of cosmic temperatures … from the coldest spots to the hottest temperatures yet achieved.

First, a little vocabulary: Astronomers use the Kelvin temperature scale, which is represented by the symbol K. Going up by 1 K is the same as going up 1°C, but the scale begins at 0 K, or -273°C, which is also called absolute zero. This is the temperature where the atoms in stuff stop moving. We’ll measure our temperatures in this tour in kelvins, but also convert them to make them more familiar!

We’ll start on the chilly end of the scale with our CAL (Cold Atom Lab) on the International Space Station, which can chill atoms to within one ten billionth of a degree above 0 K, just a fraction above absolute zero.

Cartoon of JAXA’s XRISM telescope gently rocking and back and forth on a dark blue background. The spacecraft has a roughly cylindrical body, which is depicted in light blue with various hardware shown as gray lines and shapes. Solar array "wings" extend on either side and a smaller, rounded cylindrical section pointing toward the right has small tubes extending from the end. Text above reads “XRISM’s Resolve sensor,” and text below says “0.05 K, -459.58°F (-273.10°C).”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

Just slightly warmer is the Resolve sensor inside XRISM, pronounced “crism,” short for the X-ray Imaging and Spectroscopy Mission. This is an international collaboration led by JAXA (Japan Aerospace Exploration Agency) with NASA and ESA (European Space Agency). Resolve operates at one twentieth of a degree above 0 K. Why? To measure the heat from individual X-rays striking its 36 pixels!

Cartoon of the Boomerang Nebula subtly shifting on a dark blue background. The nebula is depicted as layered blobs in different shades of pink. A small light pink oval is near the center, and the entire nebula is speckled with small white dots. Text above reads “Boomerang Nebula,” and text below says “1 K, -457.9°F (-272.2°C).”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

Resolve and CAL are both colder than the Boomerang Nebula, the coldest known region in the cosmos at just 1 K! This cloud of dust and gas left over from a Sun-like star is about 5,000 light-years from Earth. Scientists are studying why it’s colder than the natural background temperature of deep space.

Cartoon of Neptune against a dark blue background. The planet is mostly a medium shade of blue with streaks of lighter and darker blues. Text above reads “Neptune,” and text below says “72 K, -330°F (-201°C).”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

Let’s talk about some temperatures closer to home. Icy gas giant Neptune is the coldest major planet. It has an average temperature of 72 K at the height in its atmosphere where the pressure is equivalent to sea level on Earth. Explore how that compares to other objects in our solar system!

Cartoon of Death Valley in an oval inside a dark blue background. A yellow sun slowly sets in a golden sky behind abstract dark brown mountains. Text at the top of the scene reads “Death Valley,” and text below says “330 K, 134°F (56.7°C).”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

How about Earth? According to NOAA, Death Valley set the world’s surface air temperature record on July 10, 1913. This record of 330 K has yet to be broken — but recent heat waves have come close. (If you’re curious about the coldest temperature measured on Earth, that’d be 183.95 K (-128.6°F or -89.2°C) at Vostok Station, Antarctica, on July 21, 1983.)

We monitor Earth's global average temperature to understand how our planet is changing due to human activities. Last year, 2023, was the warmest year on our record, which stretches back to 1880.

Cartoon of Earth against a deep purple background. The surface of Earth shows royal blue water and the green shapes of landforms. A triangular wedge has been removed from the side facing us, revealing the layers inside. The innermost layer is a blazing white, followed by yellow, orange, and red as they near the surface. Text above reads “Earth’s core,” and text below says “5,600 K, 10,000°F (5,300°C).”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

The inside of our planet is even hotter. Earth’s inner core is a solid sphere made of iron and nickel that’s about 759 miles (1,221 kilometers) in radius. It reaches temperatures up to 5,600 K.

Cartoon of Rigel and the constellation Orion against a deep purple background. On the right is a glowing light blue star with a slightly mottled surface that slowly spins. To its left is a pattern of dots connected with lines, showing the shape of Orion, which very loosely resembles a human with a bow. Rigel’s location is marked in the lower right of the constellation and connected to the larger star with a translucent triangle. Text above reads “Surface of Rigel,” and text below says “11,000 K, 20,000°F.”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

We might assume stars would be much hotter than our planet, but the surface of Rigel is only about twice the temperature of Earth’s core at 11,000 K. Rigel is a young, blue star in the constellation Orion, and one of the brightest stars in our night sky.

Cartoon of a cloud of ionized hydrogen against a purple background. Concentric magenta blobs fill the center of the image, getting lighter toward the center. A bright white point is slightly right of center, surrounded by a yellow-orange haze and X-shaped spikes of light. Text above reads “Hydrogen ionizes,” and text below says “158,000 K, 284,000°F.”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger 

We study temperatures on large and small scales. The electrons in hydrogen, the most abundant element in the universe, can be stripped away from their atoms in a process called ionization at a temperature around 158,000 K. When these electrons join back up with ionized atoms, light is produced. Ionization is what makes some clouds of gas and dust, like the Orion Nebula, glow.

Cartoon of the Sun and its corona against a dark purple background. The Sun is a glowing yellow circle at the center, surrounded by wispy white streaks extending outward that gently wave, representing the corona. Occasionally, smaller white filaments travel inward or outward along very subtle white lines that curve around the Sun, depicting its magnetic field. Text above reads “Solar corona,” and text below says “3 million K, 5.4 million°F.”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

We already talked about the temperature on a star’s surface, but the material surrounding a star gets much, much hotter! Our Sun’s surface is about 5,800 K (10,000°F or 5,500°C), but the outermost layer of the solar atmosphere, called the corona, can reach millions of kelvins.

Our Parker Solar Probe became the first spacecraft to fly through the corona in 2021, helping us answer questions like why it is so much hotter than the Sun's surface. This is one of the mysteries of the Sun that solar scientists have been trying to figure out for years.

Cartoon of a galaxy cluster against a bright purple background. The cluster is depicted as a dozen orange and yellow ovals and abstract spiral galaxies within a cloud in shades of brown with a small tan blob at its center. Text above reads “Perseus galaxy cluster,” and text below says “50 million K, 90 million°F.”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

Looking for a hotter spot? Located about 240 million light-years away, the Perseus galaxy cluster contains thousands of galaxies. It’s surrounded by a vast cloud of gas heated up to tens of millions of kelvins that glows in X-ray light. Our telescopes found a giant wave rolling through this cluster’s hot gas, likely due to a smaller cluster grazing it billions of years ago.

Cartoon of layers of material slowly expanding after a supernova explosion against a bright purple background. A bright central dot represents the exploding star, which is surrounded by concentric spiky layers in different shades of pink and purple. Text above reads “Supernova shell,” and text below says “300 million K, 550 million°F.”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

Now things are really starting to heat up! When massive stars — ones with eight times the mass of our Sun or more — run out of fuel, they put on a show. On their way to becoming black holes or neutron stars, these stars will shed their outer layers in a supernova explosion. These layers can reach temperatures of 300 million K!

Cartoon of material swirling around a black hole, our view distorted by strong gravity, against a deep purple background. The center of the image is a black hole, with a thin ring of orange around it, then a small gap, and then a striped disk of material. The disk in front of the black hole appears as we would expect, with the disk arcing in front of the black hole like a flat pancake. However, the far side of the disk is visible above and below the black hole, instead of being blocked by it. This is due to the black hole’s gravity, which redirects the light on its path to us. Text above reads “Black hole corona,” and text below says “1 billion K, 1.8 billion°F.”

Credit: NASA's Goddard Space Flight Center/Jeremy Schnittman

We couldn’t explore cosmic temperatures without talking about black holes. When stuff gets too close to a black hole, it can become part of a hot, orbiting debris disk with a conical corona swirling above it. As the material churns, it heats up and emits light, making it glow. This hot environment, which can reach temperatures of a billion kelvins, helps us find and study black holes even though they don’t emit light themselves.

JAXA’s XRISM telescope, which we mentioned at the start of our tour, uses its supercool Resolve detector to explore the scorching conditions around these intriguing, extreme objects.

Cartoon of the moments of the universe after the big bang, against a pinkish-purple background. A blazing blob of white fills the center of the image, surrounded by a halo of bright pink, with spikes of magenta extending in all directions. Text above reads “Universe's first second,” and text below says “10 billion K, 18 billion°F.”

Credit: NASA's Goddard Space Flight Center/CI Lab

Our universe’s origins are even hotter. Just one second after the big bang, our tiny, baby universe consisted of an extremely hot — around 10 billion K — “soup” of light and particles. It had to cool for a few minutes before the first elements could form. The oldest light we can see, the cosmic microwave background, is from about 380,000 years after the big bang, and shows us the heat left over from these earlier moments.

Cartoon of a plasma formed within CERN’s Large Hadron Collider, against a purple background. A blue spherical cloud slowly expands at the center of the image, electric blue on the outside and a deeper blue at the center. Blue lines and dots surround this cloud, moving outward as it becomes larger. Text above reads “Large Hadron Collider,” and text below says “5.5 trillion K, 9.9 trillion°F.”

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

We’ve ventured far in distance and time … but the final spot on our temperature adventure is back on Earth! Scientists use the Large Hadron Collider at CERN to smash teensy particles together at superspeeds to simulate the conditions of the early universe. In 2012, they generated a plasma that was over 5 trillion K, setting a world record for the highest human-made temperature.

Want this tour as a poster? You can download it here in a vertical or horizontal version!

The background of this infographic is dominated by a long line, snaking from the upper right to the lower left in a giant "S." The line has temperatures marked from 0 at the bottom to 10-to-the-12 at the top. The guide is built around the Kelvin, the absolute temperature scale used by scientists. There are markings for each power of 10 at regular intervals. Each of the text elements is accompanied by a stylistic drawing. Some of the elements marked are: Large Hadron Collider, 5.5 trillion K (highest temperature measured); Universe’s first second, 10 billion K; Black hole corona, 1 billion K (plasma around accreting black holes); Solar corona, 3 million K; Earth’s core, 5,600 K; Death Valley, 330 K (Earth’s highest natural surface temperature); Neptune, 72 K (average atmospheric temperature at 1 bar level); Boomerang Nebula, 1 K (coldest-known natural environment); XRISM’s Resolve sensor operates at 0.05 K; Absolute zero, 0 K.

Credit: NASA's Goddard Space Flight Center/Scott Wiessinger

Explore the wonderful and weird cosmos with NASA Universe on X, Facebook, and Instagram. And make sure to follow us on Tumblr for your regular dose of space!


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