Here is a view of Earth and its moon, as seen from Mars. It combines two images acquired on Nov. 20, 2016, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter, with brightness adjusted separately for Earth and the moon to show details on both bodies. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21260.jpg

In an effort to improve fuel efficiency, NASA and the aircraft industry are rethinking aircraft design. http://www.nasa.gov/sites/default/files/thumbnails/image/bli_grc.jpg

NASA Astronaut Peggy Whitson's 7th Spacewalk http://www.nasa.gov/sites/default/files/thumbnails/image/peggyw_spacewalk.jpg

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. http://www.nasa.gov/sites/default/files/thumbnails/image/crescent_jupiter-1041.jpg

This image of a well-preserved unnamed elliptical crater in Terra Sabaea, is illustrative of the complexity of ejecta deposits forming as a by-product of the impact process that shapes much of the surface of Mars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia13078.jpg

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. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21376d.jpg

Expedition 50 Commander Shane Kimbrough of NASA at work outside the International Space Station on Jan. 13, 2017, in a photo taken by fellow spacewalker Thomas Pesquet of ESA. The two astronauts successfully installed three new adapter plates and hooked up electrical connections for three of the six new lithium-ion batteries on the station. http://www.nasa.gov/sites/default/files/thumbnails/image/32260740536_2866cf4065_o.jpg

A grid of small polygons on the Martian rock surface near the right edge of this view may have originated as cracks in drying mud more than 3 billion years ago. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21263.jpg

The wavemaker moon, Daphnis, is featured in this view, taken as NASA's Cassini spacecraft made one of its ring-grazing passes over the outer edges of Saturn's rings on Jan. 16, 2017. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21056-1041.jpg

The release of the first images today from NOAA’s newest satellite, GOES-16, is the latest step in a new age of weather satellites. This composite color full-disk visible image is from 1:07 p.m. EDT on Jan. 15, 2017, and was created using several of the 16 spectral channels available on the GOES-16 Advanced Baseline Imager (ABI) instrument. http://www.nasa.gov/sites/default/files/thumbnails/image/abi_full_disk_low_res_jan_15_2017.jpg

In a lab at NASA’s Johnson Space Center in Houston, engineers simulated conditions that astronauts in space suits would experience when the Orion spacecraft is vibrating during launch atop the agency’s powerful Space Launch System rocket on its way to deep space destinations. http://www.nasa.gov/sites/default/files/thumbnails/image/p1010154.jpg

The JunoCam imager on NASA’s Juno spacecraft snapped this shot of Jupiter’s northern latitudes. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21378.jpg

Uranus' moon Miranda is shown in a computer-assembled mosaic of images obtained Jan. 24, 1986, by the Voyager 2 spacecraft. Miranda is the innermost and smallest of the five major Uranian satellites, just 480 kilometers (about 300 miles) in diameter. Nine images were combined to obtain this full-disc, south-polar view. http://www.nasa.gov/sites/default/files/thumbnails/image/9464656357_dcd9554a40_o.jpg

Astronauts, from the left, Gus Grissom, Ed White II and Roger Chaffee stand near Cape Kennedy's Launch Complex 34 during training for Apollo 1 in January 1967. http://www.nasa.gov/sites/default/files/thumbnails/image/s67-19766.jpg

Dione's lit hemisphere faces away from Cassini's camera, yet the moon's darkened surface features are dimly illuminated in this image, due to Saturnshine. http://www.nasa.gov/sites/default/files/thumbnails/image/pia20514-1041.jpg

This panorama, photographed by an astronaut aboard the International Space Station, shows nearly the full length of Lake Powell, the reservoir on the Colorado River in southern Utah and northern Arizona. Note that the ISS was north of the lake at the time, so in this view south is at the top left of the image. http://www.nasa.gov/sites/default/files/thumbnails/image/iss048e073279_lrg.jpg

Dr. George Carruthers, right, and William Conway, a project manager at the Naval Research Institute, examine the gold-plated ultraviolet camera/spectrograph, the first moon-based observatory that Carruthers developed for the Apollo 16 mission. Apollo 16 astronauts placed the observatory on the moon in April 1972. http://www.nasa.gov/sites/default/files/thumbnails/image/hrs_720125-n-zz999-001.jpg

The Calabash Nebula, pictured here is a spectacular example of the death of a low-mass star like the sun. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1705a.jpg

Seen from outside, Enceladus appears to be like most of its sibling moons: cold, icy and inhospitable. http://www.nasa.gov/sites/default/files/thumbnails/image/pia20522-1041.jpg

The Larsen Ice Shelf is situated along the northeastern coast of the Antarctic Peninsula, one of the fastest-warming places on the planet. In the past three decades, two large sections of the ice shelf (Larsen A and B) collapsed. A third section (Larsen C) seems like it may be on a similar trajectory, with a new iceberg poised to break away soon. http://www.nasa.gov/sites/default/files/thumbnails/image/scarinlet_oli_2016006_lrg.jpg