PBS NewsHour

Asteroid Is a Dance Partner for Planet Earth

Clip: 07/28/2011 | 4m 30s

A team of Canadian scientists have discovered a "Trojan" asteroid that is caught in a synchronized orbit with the Earth. Jeffrey Brown discusses what this discovery means with the California Institute of Technology's Mike Brown.

Aired: 07/28/11

Rating: NR

Problems Playing Video? | Closed Captioning

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