
NASA's Phoenix Mars Lander monitors the atmosphere overhead and reaches out to the soil below in this artist's depiction of…

Astronaut Sunita L. Williams, Expedition 14 flight engineer, used a pistol grip tool as she worked on the International Space…

This false-color composite image of the Stephan's Quintet galaxy cluster clearly shows one of the largest shock waves ever seen…

Approximately 100 million years ago, a smaller galaxy plunged through the heart of the Cartwheel galaxy, creating ripples of brief…

This 1958 photograph shows test pilot Joseph Walker in a pressure suit beside the X-1E at the NASA High-Speed Flight…

Backdropped by a cloud-covered part of Earth, Space Shuttle Atlantis was photographed by the Expedition 15 crew after it undocked…

This is the sharpest image of Saturn's temperature emissions taken from the ground; it is a mosaic of 35 individual…

Deep Impact is an ambitious mission aiming to accomplish the incredible: Blast a hole in comet Tempel 1 in an…

After driving a short distance from their landing site, two explorers stop to inspect a robotic lander and its small…

This panoramic view of the eye of Hurricane Emily was shot by the crew of the International Space Station while…