1999 KW4: ‘Potentially Hazardous’ Asteroid Nearly a Mile Wide With Its Own Tiny Moon to Whiz by Earth This Weekend

On May 27, 2019 By peanutgallerynhIn Science and Stuff,

1999 KW4: ‘Potentially Hazardous’ Asteroid Nearly a Mile Wide With Its Own Tiny Moon to Whiz by Earth This Weekend

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