
The Cassini spacecraft looks at a brightly illuminated Enceladus and examines the surface of the leading hemisphere of this Saturnian…

Dryden mechanic Larry Phillips (right), assisted by crew chief Pat Lloyd (left) and mechanic Donny Bailes (rear), mounted the Conical…

Steve Durden, Jet Propulsion Laboratory’s principal investigator for the Airborne Precipitation Radar or APR-2, checks out the instrument after installation…

NASA Goddard engineer Zhaonan Zhang adjusted the Conical Scanning Millimeter-wave Imaging Radiometer, or CoSMIR, scan head prior to installation in…

A RS-25D engine in the Engine Processing Facility at Kennedy Space Center, Fla., is awaiting placement in a transportation canister…

Technicians oversee the installation of a Pratt Whitney Rocketdyne RS-25D engine into a transportation canister in the Engine Processing Facility…

RS-25D engines line the wall of the Engine Processing Facility at Kennedy Space Center, Fla.

This mid-infrared image of the W3A star cluster in the inset was captured by the FORCAST camera on the SOFIA…

This artist’s conception compares the KOI-961 planetary system to Jupiter and the largest four of its many moons. The KOI-961…