NOVA scienceNOW

Video Short: The Dark Matter Mystery

Clip | 4m 16s

See how a cosmic collision provides evidence that dark matter really exists.

Aired: 06/01/08

Expired: 10/21/12

Rating: NR

Problems Playing Video? | Closed Captioning

Funding for NOVA ScienceNOW is provided by the National Science Foundation and the Alfred P. Sloan Foundation.

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