View of Mons Rümker
View of Mons Rümker This view of Mons Rümker on the Moon was captured in 1971 by Apollo 15 astronauts while in lunar orbit. Located in Oceanus Procellarum—the Ocean of Storms—Mons Rümker is a raised region formed by volcanic activity late in the Moon's history. It is about 70 kilometers wide and rises more than a kilometer above the surrounding area. NASA

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

Sign up for email updates