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This elongated coronal hole rotated across the surface of the sun this past week so that it is now streaming solar wind towards Earth. Coronal holes are areas of open magnetic field from which solar wind particles stream into space. ...
That's no moon... oh wait, yes it is. It's Saturn's moon Mimas and it's large Herschel Crater. Shadows cast across the moon, provide an indication of the size of the crater's towering walls and central peak.

Named after the icy ...
Second spacewalk of 2017 successfully complete! Station (@ISS) Commander Shane Kimbrough (@astro_kimbrough) and @europeanspaceagency astronaut Thomas Pesquet (@thom_astro) concluded their spacewalk at 12:20 p.m. EST today. During the nearly six hour spacewalk, the two astronauts successfully installed three new adapter ...
The beautiful spiral galaxy visible in the center of the image is in the Virgo constellation and imaged by the Hubble Space Telescope. It presents an interesting puzzle. At first glance, this galaxy appears to be a normal spiral galaxy, ...
Crescent Jupiter with the Great Red Spot: This image of a crescent Jupiter and the iconic Great Red Spot was created by a citizen scientist (Roman Tkachenko) using data from Juno's JunoCam instrument. You can also see a series of ...
Here's a view you don't normally see on the other end of feet! 'This is what a spacewalk is: 400km of void under your feet,' wrote European Space Agency astronaut Thomas Pesquet (@thom_astro). Two astronauts spent Friday morning working outside ...
We are saddened by the loss of retired NASA astronaut Gene Cernan, the last man to walk on the moon. Cernan, commander of Apollo 17, died today, Jan. 16. "We leave as we came, and, God willing, we shall return, ...
Magnetic arcs of plasma that spiraled above two active regions held their shape fairly well over 18 hours (Jan. 11-12). The charged plasma is being controlled the magnetic field lines of the active regions. The field lines become clearly visible ...
From aboard the International Space Station, European Space Agency astronauts Thomas Pesquet Verified account (@thom_astro) posted this image and wrote, 'No lack of cameras on the @ISS! We store them in between the Russian window and the Cupola, an @europeanspaceagency-built ...
Earth's 2016 surface temperatures were the warmest since modern recordkeeping began in 1880, according to independent analyses by NASA and the National Oceanic and Atmospheric Administration (@NOAA). Scientists at our Goddard Institute for Space Studies (GISS) analyzed measurements from 6,300 ...
This galaxy with an active galactic nucleus is seen in this image combining data from the Hubble Space Telescope and the European Southern Observatory. It contains an example of a supermassive black hole hidden by gas and dust. Researchers analyzed ...
Jupiter Pearl and Swirling Cloud Tops: This amateur-processed image was taken on Dec. 11, 2016, at 9:27 a.m. PST (12:27 p.m. EST), as our Juno spacecraft (@NASAJuno) performed its third close flyby of Jupiter. At the time the image was ...
This stunning image, captured by the Hubble Space Telescope, shows part of the sky in the constellation of Sagittarius (The Archer). The region is rendered in exquisite detail - deep red and bright blue stars are scattered across the frame, ...
Behold! The first images from GOES-16, NOAA's latest in a new age of weather satellites. This image show North and South America and the surrounding oceans. GOES-16, formerly known as GOES-R, launched on Nov. 19, 2016.

GOES-16 captured this view ...
Here's Looking at You, Tethys! Tethys, one of Saturn's larger icy moons, vaguely resembles an eyeball staring off into space in this view from our Cassini spacecraft. The resemblance is due to the enormous crater, Odysseus, and its complex of ...
New spacesuit unveiled! Boeing's new Starliner spacecraft will fly astronauts to and from the International Space Station. On their journey, crews will wear lighter and more comfortable spacesuits than ever before, which capitalizes on historical designs, meeting our requirements for ...
The Hubble constant - the rate at which the universe is expanding - is one of the fundamental quantities describing our universe. International astronomers using the Hubble Space Telescope have made an independent measurement of how fast the universe is ...
Today we honor the Apollo 1 crew, who were lost in a tragic accident 50 years ago today. Astronauts, from the left, Gus Grissom, Ed White II and Roger Chaffee stand near Cape Kennedy's Launch Complex 34 during training for ...
Liftoff! An experiment to measure nitric oxide in the polar sky was successfully launched on one of our sounding rocket at 8:45 a.m. EST, Jan. 27, from the Poker Flat Research Range in Alaska.

PolarNOx is measuring nitric oxide in ...
This beautiful galaxy, is difficult to classify. While its physical properties - such as mass, size and rotational velocity - indicate it to be a spiral galaxy, its appearance looks more like a comet with its dense, luminous "head" and ...
Newly released images showcase the incredible closeness with which our Cassini spacecraft, now in its "Ring-Grazing" orbits phase, is observing Saturn's dazzling rings of icy debris. The views are some of the closest-ever images of the outer parts of the ...
Today, we observe our annual Day of Remembrance to commemorate the crews of Apollo 1, and space shuttles Challenger and Columbia, as well as other members of the NASA family who lost their lives furthering the cause of exploration. This ...
Today, we observe our annual Day of Remembrance to commemorate the crews of Apollo 1, and space shuttles Challenger and Columbia, as well as other members of the NASA family who lost their lives furthering the cause of exploration. This ...
Saturn's moon Dione's lit hemisphere faces away from our Cassini spacecraft's camera, yet the moon's darkened surface features are dimly illuminated in this image, due to Saturnshine, light reflected off of Saturn. In this image, Dione (698 miles or 1,123 ...
This image taken Jan. 30 and received on Earth today by our Cassini spacecraft is of Saturn's moon Mimas. Less than 123 miles (198 km) in mean radius, crater-covered Mimas is the smallest and innermost of Saturn's major moons. It ...
This image taken Jan. 30 and received on Earth today by our Cassini spacecraft is of Saturn's moon Mimas. Less than 123 miles (198 km) in mean radius, crater-covered Mimas is the smallest and innermost of Saturn's major moons. It ...
Part 1: What’s up in the sky this month? Use Venus and Mars to find the Zodiacal Light. On February 1st the crescent moon joins the planets Venus, Mars and Uranus in the southwest sky just after sunset.
CREDIT: NASA
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Part 2: Comet 45P, visible after sunset over the last two months through both binoculars and telescopes makes its closest approach to Earth on February 11. The second of several comets visible this year through binoculars or telescopes, Comet 2P ...
It's known as the Rotten Egg Nebula because it contains a lot of sulphur, an element that, when combined with other elements, smells like a rotten egg - but luckily, it resides over 5,000 light-years away in the constellation of ...
Aurora! This image was posted by astronaut Thomas Pesquet (@thom_astro) of the European Space Agency (@europeanspaceagency), who wrote, 'After 2 months in space, I saw my first aurora! Magical green lights in the distance. Always something to look forward to ...

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