Bruce Murray Space Image Library

A pit crater in Mare Tranquillitatis

A pit crater in Mare Tranquillitatis
A pit crater in Mare Tranquillitatis NASA's Lunar Reconnaissance Orbiter captured this view of a pit crater in Mare Tranquillitatis on the Moon's surface. The crater's width and depth is roughly 100 meters, and may lead to ancient lava tubes beneath the surface. NASA/GSFC/Arizona State University

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

Sign up for email updates