General Atomics' Altus vehicle was used to verify technologies that will lead to a long-duration (12 to 72 hours), high-altitude…
Graphic of NASA's Heliphysics System Observatory, or HSO, spacecraft.
This artist's concept shows NASA's Dawn spacecraft arriving at the dwarf planet Ceres.
This artist's concept shows NASA's Dawn spacecraft arriving at the dwarf planet Ceres (lower right). Dawn
The surface of Ceres is covered with craters of many shapes and sizes, as seen in this mosaic of the…
The surface of Ceres is covered with craters of many shapes and sizes, as seen in this new animation of…
Some might see a pancake, and others a sand dollar, in this new image from NASA's Dawn mission.
A scientist streaks microbial cultures.
Astronaut Steve Swanson, equipped with a bungee harness, exercises on the T2 treadmill.
This image was taken by NASA's Dawn spacecraft of dwarf planet Ceres on Feb. 19 from a distance of nearly…
