Space
Astronomy and Space
Roter Kamm Crater in Namibia, Africa
The asteroid that created this crater 5 million years ago was about 900 feet in diameter. The crater itself is about 1.5 miles in diameter and 400 feet deep.
(Photo: NASA Johnson Space Center)
Thrills and Spills
Why Are Planets Round?
Killer Asteroids
Dinosaur Disaster
Blast It! (Maybe Not)
Shop for the best in science books, kits, and more.
Shop Now