Ahuna Mons on Ceres Seen From Low-Altitude Mapping Orbit

The mysterious mountain Ahuna Mons is seen in this mosaic of images from NASA's Dawn spacecraft.

Hubble and a Stellar Fingerprint

Showcased at the center of this Hubble Space Telescope image is an emission-line star known as…

Expedition 46 Commander Scott Kelly Back in Texas after His Year in Space

Expedition 46 Commander Scott Kelly of NASA is seen after returning to Ellington Field, Thursday, March…

Astronaut Scott Kelly Returns to Houston after a Year in Space

Astronaut Scott Kelly Returns to Houston after a Year in Space

One-Year Crew Returns to Earth

The Soyuz TMA-18M spacecraft is seen as it lands with Expedition 46 Commander Scott Kelly of…

Last Sunrise From a Year in Space

NASA astronaut Scott Kelly shared a series of five sunrise photographs on Tuesday, March 1, 2016,…

Different Worlds

Although Tethys and Janus both orbit Saturn and are both made of more or less the…

Hubble’s Blue Bubble

The distinctive blue bubble appearing to encircle WR 31a is a Wolf–Rayet nebula — an interstellar…

Mathematician Katherine Johnson at Work

NASA research mathematician Katherine Johnson is photographed at her desk at Langley Research Center in 1966.…

Flying Through the Aurora’s Green Fog

Expedition 46 crew member Tim Peake of the European Space Agency (ESA) shared a stunning image…