This false-color image is composed of 15 images taken through three color filters by NASA's Galileo spacecraft as it passed through the Earth-Moon system on Dec. 8, 1992. http://www.nasa.gov/sites/default/files/thumbnails/image/9460965180_e5246a9e56_o.jpg

The Aug. 21, 2017, total solar eclipse was rare in its long, uninterrupted path over land, which provided scientists with a rare chance to investigate the Sun and its influence on Earth in ways that aren’t usually possible. On Dec. 11, researchers discussed initial findings based on observations gathered during the eclipse. http://www.nasa.gov/sites/default/files/thumbnails/image/eclipse_full_res_0.png

Due to its unique evolutionary status, Cassiopeia A (Cas A) is one of the most intensely studied of these supernova remnants. http://www.nasa.gov/sites/default/files/thumbnails/image/casa_elements.jpg

This image from NASA's Mars Reconnaissance Orbiter (MRO) of northern Meridiani Planum shows faults that have disrupted layered deposits. http://www.nasa.gov/sites/default/files/thumbnails/image/pia22187.jpg

The Soyuz MS-05 spacecraft is seen as it lands with Expedition 53 Commander Randy Bresnik of NASA and Flight Engineers Paolo Nespoli of ESA (European Space Agency) and Sergey Ryazanskiy of the Russian space agency Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 14, 2017. http://www.nasa.gov/sites/default/files/thumbnails/image/39016438722_2a37bca029_o.jpg

The two-stage Falcon 9 launch vehicle lifts off from Space Launch Complex 40 at Cape Canaveral Air Force Station carrying the Dragon resupply spacecraft to the International Space Station. Dragon will bring supplies, equipment and new science experiments for technology research to the orbiting laboratory. http://www.nasa.gov/sites/default/files/thumbnails/image/38365591494_c3c003672f_o.jpg

This schlieren image shows an Air Force Test Pilot School T-38 in a transonic state, meaning the aircraft is transitioning from a subsonic speed to supersonic. http://www.nasa.gov/sites/default/files/thumbnails/image/f2p6n_hs_color_0.jpg

Acquired on November 29 by Operation IceBridge during a flight to Victoria Land, this image shows an iceberg floating in Antarctica's McMurdo Sound. http://www.nasa.gov/sites/default/files/thumbnails/image/mcmurdoiceberg_pho_2017333_lrg.jpg

Greetings from @Astro_Sabot, otherwise known as Mark Vande Hei, from aboard the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/2017-12-17_401f3777_little_rock_-_memphis_-_birmingham_-_jackson_-_florida_-_new_orleans.jpg

On Dec. 21, 1968, the Apollo 8 crew leaves the Kennedy Space Center's then-named Manned Spacecraft Operations Building during the mission's prelaunch countdown on the way to their history-making lunar orbiting flight. http://www.nasa.gov/sites/default/files/thumbnails/image/s68-55999.jpg

The Hubble Space Telescope captured what looks like a colorful holiday ornament in space. It's actually an image of NGC 6326, a planetary nebula with glowing wisps of outpouring gas. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1010a_0.jpg

These images show a subtle feature on dwarf planet Ceres called Kwanzaa Tholus. http://www.nasa.gov/sites/default/files/thumbnails/image/tholus.jpg

An astronaut aboard the International Space Station took this photograph of the city lights of Naples and the Campania region of southern Italy. http://www.nasa.gov/sites/default/files/thumbnails/image/naples.jpg

In September 2017, a new iceberg calved from Pine Island Glacier—one of the main outlets where the West Antarctic Ice Sheet flows into the ocean. http://www.nasa.gov/sites/default/files/thumbnails/image/pineisland_oli_2017349_lrg.jpg

THE OSIRIS-REx mission will map and return samples from asteroid Bennu, a carbon-rich hunk of rock that might contain organic materials or molecular precursors to life. OSIRIS-Rex is expected to reach Bennu in August, 2018. http://www.nasa.gov/sites/default/files/thumbnails/image/full_1024x1024.png

On Jan. 3, 1962, the newly announced Mercury Mark II project was renamed Project Gemini. This artist's concept of a two-person Gemini spacecraft in flight shows a cutaway view. http://www.nasa.gov/sites/default/files/thumbnails/image/s65-14257.jpg

This Geocolor image from NOAA's GOES-16 satellite captures the deepening storm off the East coast of the United States on Jan. 4, 2018, at 16:22 UTC. The powerful nor'easter is battering coastal areas with heavy snow and strong winds, from Florida to Maine. http://www.nasa.gov/sites/default/files/thumbnails/image/20180041622_goes16-abi-conus-geocolor-5000x3000.jpg

Millions of people along the East Coast of the United States faced snow and ice, gusty winds, power outages, travel delays, school closings, and flooding as a rapidly-intensifying Nor’easter plowed northward during the first week of 2018. http://www.nasa.gov/sites/default/files/thumbnails/image/eastcoast_vir_2018004_lrg.jpg

Saturn’s rings, made of countless icy particles, form a translucent veil in this view from NASA’s Cassini spacecraft. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21901-1041.jpg

On Jan. 9, 1969, NASA announced the prime crew of the Apollo 11 lunar landing mission. This portrait was taken on Jan. 10, the day after the announcement of the crew assignment. From left to right are lunar module pilot Buzz Aldrin, commander Neil Armstrong; and command module pilot Michael Collins. http://www.nasa.gov/sites/default/files/thumbnails/image/31419815333_7aaa95bef0_o.jpg