The CI chondrites and asteroid Bennu. To learn about an asteroid – a rocky or metallic object in orbit around the Sun – we started with a study of meteorites.. Asteroids like Bennu are rocky ...

The birth of the American Revolution 07:48. Newsreels told the story of World War II, and the early still photography of Matthew Brady chronicled the horrors of the Civil War.

Bennu’s parent asteroid likely broke apart 1 to 2 billion years ago, and some of the fragments came together to form the rubble pile we know as Bennu. These minerals are also found on icy bodies ...