Published
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 asteroid expert Dr. Amy Mainzer explains. Learn more: nasa.gov/planetarydefense
Producer: Scott Bednar
Producer/Editor: Jessica Wilde
Producer: Scott Bednar
Producer/Editor: Jessica Wilde
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- Science
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