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.
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.
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.
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.
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.
NASA Astronaut Peggy Whitson's 7th Spacewalk
Expedition 50 Flight Engineer Thomas Pesquet of the European Space Agency photographed the Rocky Mountains from his vantage point in low Earth orbit aboard the International Space Station. He shared the image with his social media followers on Jan. 9, 2017, writing, "the Rocky mountains are a step too high – even for the clouds to cross."
In an effort to improve fuel efficiency, NASA and the aircraft industry are rethinking aircraft design.