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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; -
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;
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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; -
Colorful Liquid in Space (Part 1): 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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Brightening Magnetic Loops: Two active regions sprouted arches of bundled magnetic loops in this video from Our Solar Dynamics Observatory taken on Nov. 11-12, 2015. Charged particles spin along the magnetic field, tracing out bright lines as they emit light in extreme ultraviolet wavelengths. About halfway through the video, a small eruption from the active region near the center causes the coils to rise up and become brighter as the region re-organizes its magnetic field. This video was taken in extreme ultraviolet wavelengths of 171 angstroms, typically invisible to our eyes but colored here in gold. Credit: NASA/SDO #nasa #space #sun #solar #weather #spaceweather #sdo #nasabeyond #heliophysics #science; -
Humanoid robots will be helpful to astronauts on our journey to Mars, so we have awarded prototypes to two universities for advanced research and development work. We're interested in humanoid robots because they can help or even take the place of astronauts working in extreme space environments. Robots, like our R5, could be used in future NASA missions either as precursor robots performing mission tasks before humans arrive or as human-assistive robots actively collaborating with the human crew. R5 initially was designed to complete disaster-relief maneuvers, however, its main goal is to prove itself worthy of even trickier terrain -- deep space exploration. Image Credit: NASA #nasa #nasatech #space #robot #r5 #journeytomars #technology #321techoff; -
A Brighter Moon: Although Saturn's moons Dione (near) and Enceladus (far) are composed of nearly the same materials, Enceladus has a considerably higher reflectivity than Dione. As a result, it appears brighter against the dark night sky. The surface of Enceladus (313 miles or 504 kilometers across) endures a constant rain of ice grains from its south polar jets. As a result, its surface is more like fresh, bright, snow than Dione's (698 miles or 1123 kilometers across) older, weathered surface. As clean, fresh surfaces are left exposed in space, they slowly gather dust and radiation damage and darken in a process known as "space weathering." The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 8, 2015. Credit: NASA/JPL-Caltech/Space Science Institute #nasa #cassini #nasacassini #space #saturn #dione #enceladus #planets #nasabeyond #science; -
NASA astronaut Kjell Lindgren took this photograph on Nov. 11 from the International Space Station (@ISS) and shared it with his followers on social media. Lindgren wrote, "The delicate fingerprints of water imprinted on the sand. The #StoryOfWater." One of the ways research on the space station benefits life on Earth is by supporting water purification efforts worldwide. Drinkable water is vital for human survival. Unfortunately, many people around the world lack access to clean water. Using technology developed for the space station, at-risk areas can gain access to advanced water filtration and purification systems, making a life-saving difference in these communities. Joint collaborations between aid organizations and NASA technology show just how effectively space research can adapt to contribute answers to global problems. The commercialization of this station-related technology has provided aid and disaster relief for communities worldwide. Image Credit: NASA #nasa #space #iss #spacestation #earth #nasatech #astronauts; -
Only three local stars appear in this image, quartered by right-angled diffraction spikes. Everything besides them is a galaxy; floating like a swarm of microbes in a drop of water, and brought into view here not by a microscope, but by the Advanced Camera for Surveys on the Hubble Space Telescope. In the foreground, the spiral arms of MCG+01-02-015 seem to wrap around one another, cocooning the galaxy. The scene suggests an abundance of galactic companionship for MCG+01-02-015, but this is a cruel trick of perspective. Instead, MCG+01-02-015’s unsentimental naming befits its position within the cosmos: it is a void galaxy, the loneliest of galaxies. The galaxy is so isolated that if our galaxy, the Milky Way, were to be situated in the same way, we would not even have known of the existence of other galaxies until the development of strong telescopes and detectors in the 1960s. Image credit: ESA/Hubble & NASA and N. Gorin (STScI), Acknowledgement: Judy Schmidt #nasa #hubble #telescope #space #galaxy #galaxies #stars #star;
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