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Before drifting off to sleep tonight, NASA astronaut Scott Kelly (@stationcdrkelly) captured this images from the International Space Station and wrote, "Day 248. #Aurora highlights the end of another month. #GoodNight from @ISS! #YearInSpace" Kelly is living and working off the Earth, for the Earth aboard the station for a yearlong mission. Traveling the world about 250 miles above the Earth, and at 17,500 mph, he circumnavigates the globe more than a dozen times a day. Image Credit: NASA #nasa #spacestation #space #earth #iss #earth; -
A view from the "Kimberley" formation on Mars taken by NASA's Curiosity rover. The strata in the foreground dip towards the base of Mount Sharp, indicating flow of water toward a basin that existed before the larger bulk of the mountain formed. This image was taken by the Mast Camera (Mastcam) on Curiosity on the 580th Martian day, or sol, of the mission. The colors are adjusted so that rocks look approximately as they would if they were on Earth, to help geologists interpret the rocks. This "white balancing" to adjust for the lighting on Mars overly compensates for the absence of blue on Mars, making the sky appear light blue and sometimes giving dark, black rocks a blue cast. Image credit: NASA/JPL-Caltech/MSSS #nasa #space #mars #marscuriosity #rover #redplanet; -
Thank you for joining us as we shared #BlackHoleFriday images & information about black holes. We'll keep hunting for black holes and studying them. How? Spotting black holes is tricky. Because they don’t give off light, astronomers have a difficult time pinpointing their location. But when a black hole gets close enough to an object, like a star, for example, and begins consuming the object's mass, the matter that pours into its gravitational clutches can get so hot that it glows and releases energy in the form of X-ray light. The most powerful X-rays are emitted from the hottest material swirling just outside the edge of the black hole. By observing this light with space telescopes, scientists can determine where black holes are hiding in the cosmos. Credit: NASA's Goddard Space Flight Center #blackholes #blackhole #nasa #space #blackfriday; -
Looking for a size large this #BlackFriday? Here's a supermassive black hole. It's #BlackFriday, but for us, it's the 3rd annual #BlackHoleFriday. Today, we're posting pics & info about black holes. This artist's concept illustrates a supermassive black hole with millions to billions times the mass of our sun. Supermassive black holes are enormously dense objects buried at the hearts of galaxies. (Smaller black holes also exist throughout galaxies.) In this illustration, the supermassive black hole at the center is surrounded by matter flowing onto the black hole in what is termed an accretion disk. This disk forms as the dust and gas in the galaxy falls onto the hole, attracted by its gravity. Also shown is an outflowing jet of energetic particles, believed to be powered by the black hole's spin. The regions near black holes contain compact sources of high energy X-ray radiation thought, in some scenarios, to originate from the base of these jets. This high energy X-radiation lights up the disk, which reflects it, making the disk a source of X-rays. The reflected light enables astronomers to see how fast matter is swirling in the inner region of the disk, and ultimately to measure the black hole's spin rate. Image credit: NASA/JPL-Caltech #blackhole #blackholes #nasa #space; -
Just like the smallest stores can fit massive crowds on Black Friday, this small galaxy contains a supermassive black hole. Astronomers using data from our Hubble Space Telescope have found this unlikely object in an improbably place — a monster black hole lurking inside one of the tiniest galaxies ever known. If you lived inside this dwarf galaxy, the night sky would dazzle with at least 1 million stars visible to the naked eye. Our nighttime sky as seen from Earth’s surface shows 4,000 stars. The finding implies there are many other compact galaxies in the universe that contain supermassive black holes. Today is our third annual #BlackHoleFriday, where we're posting pics & info about black holes on #BlackFriday. Credit: NASA, ESA, STScI-PRC14-41a #blackhole #blackholes #NASA #Space;
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Double Black Hole Doorbuster! Astronomers using our Hubble Space Telescope have found that Markarian 231, the nearest galaxy to Earth that hosts a quasar, is powered by two central black holes furiously whirling about each other. Like a pair of whirling skaters, the black-hole duo generates tremendous amounts of energy that makes the core of the host galaxy outshine the glow of its population of billions of stars, which scientists then identify as quasars. Today is our third annual #BlackHoleFriday, where we're posting pics & info about black holes on #BlackFriday. Credits: NASA, ESA, and G. Bacon (STScI) #blackhole #blackholes #NASA #Space; -
Tired from shopping? Maybe it's time to devour some snacks. Here's a black hole snacking on a star. It's #BlackFriday, but for us, it's the 3rd annual #BlackHoleFriday. Today, we'll post pics & info about black holes. On March 28, 2011, NASA's Swift detected intense X-ray flares thought to be caused by a black hole devouring a star. In one model, illustrated here, a sun-like star on an eccentric orbit plunges too close to its galaxy's central black hole. About half of the star's mass feeds an accretion disk around the black hole, which in turn powers a particle jet that beams radiation toward Earth. Video credit: NASA/Goddard Space Flight Center/CI Lab #NASA #Space #Blackhole #blackholes; -
Feel like the items in your shopping cart are growing, while your bank account stays the same? Then you might be able to relate to this black hole. This artist illustration shows a black hole discovered in July 2015 that grew much more quickly than its host galaxy. The discovery calls into question previous assumptions on the development of galaxies. Today is our third annual #BlackHoleFriday, where we're posting pics & info about black holes on #BlackFriday. Credit: NASA #blackhole #blackholes #NASA #Space; -
Here's a 2 for 1 special showing two black holes merging into one. It's #BlackFriday, but for us, it's the 3rd annual #BlackHoleFriday. Today, we'll post pics & info about black holes. A black hole is a massive object whose gravitational field is so intense that no light (electromagnetic radiation) can escape it. When two orbiting black holes merge, a massive amount of energy is released in the form of jets. Meanwhile, the movement of these massive bodies disturbs the fabric of space-time around them, sending ripples of gravitational waves radiating outward. These waves are predicted by Einstein's theory of general relativity, but have yet to be directly detected. In this video, we see a closer look at the center of a spiral galaxy reveals a pair of black holes locked in a death spiral. When they merge, the massive amount of energy is released in the form of jets. Credit: NASA #NASA #Space #Blackhole #blackholes; -
It's #BlackFriday, but for us, it's the third annual #BlackHoleFriday. Today, we'll post pics & info about black holes. What Is a Black Hole? A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape. The strong gravity occurs because matter has been pressed into a tiny space. This compression can take place at the end of a star's life. Some black holes are a result of dying stars. Because no light can escape, black holes are invisible. However, space telescopes with special instruments can help find black holes. They can observe the behavior of material and stars that are very close to black holes. Pictured here is an artist's drawing a black hole named Cygnus X-1. It formed when a large star caved in. This black hole pulls matter from blue star beside it. Image Credit: NASA/CXC/M.Weiss #NASA #Space #Blackhole #blackholes;
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Happy Thanksgiving from 250 miles above! Astronaut Scott Kelly (@StationCDRKelly) and Kjell Lindgren (@Astro_Kjell) wish you the best this holiday from the International Space Station (@ISS). Video credit: NASA #nasa #space #iss #spacestation #thanksgiving #happythanksgiving; -
This curious galaxy — only known by the seemingly random jumble of letters and numbers 2MASX J16270254+4328340 — has been captured by the Hubble Space Telescope dancing the crazed dance of a galactic merger. The galaxy has merged with another galaxy leaving a fine mist, made of millions of stars, spewing from it in long trails. Despite the apparent chaos, this snapshot of the gravitational tango was captured towards the event’s conclusion. This transforming galaxy is heading into old age with its star-forming days coming to an end. The true drama occurred earlier in the process, when the various clouds of gas within the two galaxies were so disturbed by the event that they collapsed, triggering an eruption of star formation. This flurry of activity exhausted the vast majority of the galactic gas, leaving the galaxy sterile and unable to produce new stars. As the violence continues to subside, the newly formed galaxy’s population of stars will redden with age and eventually begin to cool and dim one by one. With no future generations of stars to take their place, the galaxy thus begins a steady path of fading and quieting. Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt #space #nasa #hubble #galaxy #galaxies #telescope; -
Saturn's rings are so expansive that they often sneak into Cassini's pictures of other bodies. Here, they appear with the planet in a picture taken during a close flyby of Saturn's moon Dione. The flyby of Dione during which this image was taken was the last close encounter with this moon during Cassini's mission. The main goal of the flyby was to use the spacecraft as a probe to measure Dione's gravity field. However, scientists also managed to take some very close images of the surface. All of the data will be helpful to understand the interior structure and geological history of this distant, icy world. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 17, 2015 at a distance of approximately 48,000 miles (77,000 kilometers) from Dione. Credit: NASA/JPL-Caltech/Space Science Institute #saturn #cassini #dione #moon #planets #nasa #space #solarsystem #science; -
Young Elliptical Galaxy: At the center of this amazing image is an elliptical galaxy. Surrounding the galaxy and visible in the background are a wealth of other galaxies of all shapes. The reason for the peculiar shape of this galaxy stems from its formation history. When galaxies form, they usually resemble our galaxy, the Milky Way, with flat disks and spiral arms where star formation rates are high and which are therefore very bright. An elliptical galaxy is a much more disordered object which results from the merging of two or more disk galaxies. During these violent mergers most of the internal structure of the original galaxies is destroyed. The fact that NGC 3610 still shows some structure in the form of a bright disk implies that it formed only a short time ago. The galaxy's age has been put at around four billion years and it is an important object for studying the early stages of evolution in elliptical galaxies. Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt #nasa #hubble #space #galaxy #astronomy #universe #nasabeyond #science; -
Colorful Liquid in Space (Part 2): Astronauts (@StationCDRKelly) on the International Space Station (@ISS) dissolved an effervescent tablet in a floating ball of water, and captured images using a camera capable of recording four times the resolution of normal high-definition cameras. The higher resolution images and higher frame rate videos can reveal more information when used on science investigations, giving researchers a valuable new tool aboard the space station. This footage is one of the first of its kind. The cameras are being evaluated for capturing science data and vehicle operations by our engineers. Credit: NASA #nasa #iss #spacestation #water #science #yearinspace;
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