Video: Does NASA know about all the asteroids?

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Does NASA know about ALL the asteroids?

We know about the vast majority of larger ones and none of those pose a threat, but space is big, so we're always on the lookout. NASA expert Dr. Amy Mainzer explains.

Credit: Scott Bednar, Producer/Editor: Jessica Wilde

Provided by Science@NASA

Citation: Video: Does NASA know about all the asteroids? (2021, September 23) retrieved 4 February 2023 from
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