Shackleton crater
Shackleton crater Some craters near the Moon's poles have permanently shadowed centers and raised rims that receive near-constant sunlight. One such example is Shackleton crater at the Moon's south pole. The exact south pole is located on the rim near the upper-right corner of this image. NASA/GSFC/Arizona State University

"We're changing the world. Are you in?"
- CEO Bill Nye

Sign up for email updates