
A nearly full Rhea shines in the sunlight in this recent Cassini image. Rhea (949 miles, or 1,527 kilometers across)…

Technicians install the Long Range Reconnaissance Imager (LORRI) on NASA’s New Horizons spacecraft.

Excellent view of the Apollo 9 Lunar Module, “Spider,” in a lunar landing configuration, as photographed from the Command and…

A nearby star stands out in red in this image from the Second Generation Digitized Sky Survey. The star, called…

March 7, 2014 — The Advanced Plant Experiment, or APEX, experiment as it is being prepared by John Carver, a…

March 7, 2014 — In the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida, QinetiQ North America…

March 7, 2014 — Terry Tullis, a QinetiQ North America mechanical engineer, prepares the Biological Research In Canisters, or BRIC,…

Guenter Wendt, the original pad leader for NASA’s manned space program, coaxes a smile out of astronaut John Glenn after…

South America and portions of North America and Africa are shown in this false-color image from NASA’s MESSENGER spacecraft, taken…

At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 39/40 Flight Engineer Steve Swanson of NASA (left), Alexander…