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.
Humans On Other Worlds Humans have walked on the surface of only one world besides their own—the Moon. Someday we will return to the Moon, visiting our neighbouring world, Mars, and investigate asteroids that pass near Earth. In this issue we remember those first steps on the Moon and look forward to new journeys to other worlds. Johnson Space Center / NASA