Crash Course Astronomy

Asteroids: Crash Course Astronomy #20

Episode 20 | 11m 32s

Now that weÕve finished our tour of the planets, weÕre headed back to the asteroid belt. Asteroids are chunks of rock, metal, or both that were once part of smallish planets but were destroyed after collisions. Most orbit the Sun between Mars and Jupiter, but some get near the Earth.

Aired: 01/05/16

Rating: NR

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