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Enceladus is a world divided. To the north, the terrain is covered in impact craters, much like other icy moons. But to the south, the record of impact cratering is much more sparse, and instead the land is covered in fractures, ropy or hummocky terrain and long, linear features. The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on July 27, 2015. The spacecraft will sample the ocean of Enceladus on Wednesday, Oct. 28, when it flies through the moon's plume of icy spray. Credit: NASA/JPL-Caltech/Space Science Institute #nasa #cassini #enceladus #moon #saturn #nasabeyond #science; -
This image shows the galaxy Messier 94, which lies in the small northern constellation of the Hunting Dogs, about 16 million light-years away. Within the bright ring or starburst ring around Messier 94, new stars are forming at a high rate and many young, bright stars are present within it. The cause of this peculiarly shaped star-forming region is likely a pressure wave going outwards from the galactic center, compressing the gas and dust in the outer region. The compression of material means the gas starts to collapse into denser clouds. Inside these dense clouds, gravity pulls the gas and dust together until temperature and pressure are high enough for stars to be born. Image credit: ESA/NASA #nasa #space #hubble #hst #hubble25 #galaxy #messier94 #nasabeyond #science; -
Artist's conception of a hot Jupiter, previously thought to be lonely planets. Scientists have now discovered one hot Jupiter with two close companions, leading to new ideas about planet formation. Until now, some 300 hot Jupiters have been identified over the past two decades, and this is the first time any close-in planets were discovered. This new discovery is helpful to scientists who are trying to understand how planets form and move in solar systems. Credit: Credit: NASA/CXC/M.Weiss (ARTIST CONCEPT) #nasa #space #nasabeyond #exoplanet #exoplanetweek #science; -
Aboard the International Space Station, astronaut Scott Kelly (@stationcdrkelly) this photo today and wrote, 'Hurricane #Patricia looks menacing from @ISS. Stay safe below, #Mexico. #YearInSpace.' The National Hurricane Center said that Hurricane Patricia had grown into a monster hurricane. In fact, it is the strongest eastern north pacific hurricane on record. a Hurricane Warning was in effect from San Blas to Punta San Telmo. A Hurricane Watch was in effect from east of Punta San Telmo to Lazaro Cardenas and a Tropical Storm Warning was in effect from east of Punta San Telmo to Lazaro Cardenas. Image Credit: NASA #nasa #space #spacestation #iss #hurricane #storm #earth #weather #'hurricanepatricia; -
Big Bang Frontiers: Observations have taken advantage of gravitational lensing to reveal the largest sample of the faintest and earliest known galaxies in the universe. Some of these galaxies formed just 600 million years after the big bang and are fainter than any other galaxy yet uncovered by the Hubble Space Telescope. The team has determined for the first time with some confidence that these small galaxies were vital to creating the universe that we see today. Credits: ESA/NASA #nasa #space #hubble #hubble25 #hst #bigbang #galaxy #nasabeyond #science;
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This galaxy cluster is home to one of the most powerful eruptions ever observed! X-rays detected by our Chandra X-Ray Observatory (blue) show the hot gas that comprises much of the mass of this enormous object. Within the Chandra data, holes, or cavities, can be seen. These cavities were created by an outburst from a supermassive black hole at the center of the cluster, which ejected the enormous jets detected in radio waves (pink) detected by the Very Large Array. These data have been combined with optical data from the Hubble Space Telescope of galaxies in the cluster and stars in the field of view (orange). Image credit: X-ray: NASA/CXC/Univ. of Waterloo/A.Vantyghem et al; Optical: NASA/STScI; Radio: NRAO/VLA #nasa #space #chandra #xray #galaxy #blackhole #nasabeyond #science; -
We unveiled mosaics of Pluto and its largest moon Charon, representing the global response to its popular "#PlutoTime" social media campaign. ThePluto Time concept and widget was developed by the New Horizons science team so that people could experience the approximate sunlight level on Pluto at noon-generally around dawn or dusk on Earth. Thousands of those submissions have now been assembled into three stunning mosaics of Pluto, Charon, and a combined image of the two. The mosaics include not only dim skies on Earth, but famous landmarks, selfies, and even family pets. Zoom in: http://go.nasa.gov/1MC7H4x Image Credit: NASA/JPL #nasa #pluto #plutoflyby #space #nasabeyond #newhorizons #mosaic #science; -
Repost from @WhiteHouse: This view of the International Space Station is a composite of nine frames that captured the @ISS transiting the moon at roughly five miles per second on August 2. The International Space Station is a unique place—a convergence of science, technology, and human innovation that demonstrates new technologies and makes research breakthroughs not possible on Earth. As the third brightest object in the sky, the International Space Station is easy to see if you know when to look up. You can sign up for alerts and get information on when the International Space Station flies over you at spotthestation.nasa.gov. Thanks for following along today as @NASA shared the view from #AstronomyNight at the White House. Remember to look up and stay curious!; -
Repost from @whitehouse: This incredible look at the Cat’s Eye nebula was taken from a composite of data from @NASA's Chandra X-ray Observatory and Hubble Space Telescope. This famous object is a so-called planetary nebula that represents a phase of stellar evolution that the Sun should experience several billion years from now. When a star like the Sun begins to run out of fuel, it becomes what is known as a red giant. In this phase, a star sheds some of its outer layers, eventually leaving behind a hot core that collapses to form a dense white dwarf star. A fast wind emanating from the hot core rams into the ejected atmosphere, pushes it outward, and creates the graceful filamentary structures seen with optical telescopes. #AstronomyNight; -
Repost from @whitehouse: Take a look at the millions of galaxies that populate the patch of sky known as the COSMOS field, short for Cosmic Evolution Survey. A portion of the COSMOS field is seen here by @NASA's Spitzer Space Telescope. Even the smallest dots in this image are galaxies, some up to 12 billion light-years away. The picture is a combination of infrared data from Spitzer (red) and visible-light data (blue and green) from Japan's Subaru telescope atop Mauna Kea in Hawaii. The brightest objects in the field are more than ten thousand times fainter than what you can see with the naked eye. #AstronomyNight;
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Repost from @whitehouse: Next up is this incredible view of Saturn's rings, seen in ultraviolet by @NASA’s Cassini spacecraft. Hinting at the origin of the rings and their evolution, this ultraviolet view indicates that there's more ice toward the outer part of the rings than in the inner part. #AstronomyNight; -
Repost from @whitehouse: Check out this look at our sun taken by @NASA’s Solar Dynamics Observatory. The SDO watches the sun constantly, and it captured this image of the sun emitting a mid-level solar flare on June 25. Solar flares are powerful bursts of radiation. Harmful radiation from a flare can't pass through Earth's atmosphere to physically affect humans on the ground. But when they're intense enough, they can disturb the atmosphere in the layer where GPS and communications signals travel. #AstronomyNight; -
Repost from @whitehouse: It’s #AstronomyNight at the White House! @NASA's here on the South Lawn teaching everyone about the science of astronomy. And tonight, they're taking over our account to show different ways of observing the universe and seeing the world around us. Here’s a nighttime view of Washington, D.C. from the astronauts on the International Space Station @ISS on October 17. Can you spot the White House? Follow along tonight as we celebrate everyone who's looking up at the night sky with curiosity!; -
A mass of plasma gathered itself into a twisting mass, spun around for a bit, then rose up and broke apart over a 10-hour period (Oct. 13, 2015). The image and video were produced with a combination of two wavelengths of extreme ultraviolet light. Prominences are unstable clouds of gas tethered above the surface of the Sun by magnetic forces. Much of the jittering and odd jumping motions above the surface were artifacts caused by brightening and contrast changes used to bring out the detail and structure of the prominence. Credit: Solar Dynamics Observatory, NASA #nasa #space #sun #plasma #nasabeyond #science; -
Hubble Sees Elegant Spiral Hiding a Hungry Monster NGC 4639 is a beautiful example of a type of galaxy known as a barred spiral. It lies over 70 million light-years away in the constellation of Virgo and is one of about 1,500 galaxies that make up the Virgo Cluster. In this image, taken by the Hubble Space Telescope, one can clearly see the bar running through the bright, round core of the galaxy. Bars are found in around two-thirds of spiral galaxies, and are thought to be a natural phase in their evolution. The galaxy’s spiral arms are sprinkled with bright regions of active star formation. Each of these tiny jewels is actually several hundred light-years across and contains hundreds or thousands of newly formed stars. But NGC 4639 also conceals a dark secret in its core — a massive black hole that is consuming the surrounding gas. Image credit: ESA/Hubble & NASA;
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