Tsiolkovsky Crater
Tsiolkovsky Crater Tsiolkovsky Crater, on the far side of the moon, as seen by the HDTV camera on board the Kaguya lunar orbiter. One of the most eye-catching features on the far side, the floor of this 185km-wide impact crater is covered with solidified lava, something much more commonly seen on the near side of the moon. JAXA/NHK

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

Sign up for email updates