How this 'risky asteroid' gave astronomers a tricky challenge

Monday July 4, 2022. 01:13 PM , from ZDNet

2021 QM1 was predicted to come dangerously close to Earth - so scientists were concerned when it briefly disappeared from view.

https://www.zdnet.com/article/2021-qm1-how-humankinds-most-risky-asteroid-nearly-escaped-scientists/

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