Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
Degas on the Horizon Enhanced color view of Degas Crater on Mercury, as imaged by the MESSENGER spacecraft. The crater is the bluish feature near the center of the frame, and measures about 55 kilometers across. At full resolution, this image shows about 533 meters per pixel. NASA / Johns Hopkins University Applied Physics Laboratory / Carnegie Institution of Washington