How this 'risky asteroid' gave astronomers a tricky challenge July 04, 2022, 03:51:24 PM How this 'risky asteroid' gave astronomers a tricky challenge[html]2021 QM1 was predicted to co*e dangerously close to Earth - so scientists were concerned when it briefly disappeared from view.[/html]Source: How this 'risky asteroid' gave astronomers a tricky challenge (http://ht**://www.zdnet.c**/article/2021-qm1-how-humankinds-most-risky-asteroid-nearly-escaped-scientists/#ftag=RSSbaffb68) Quote Selected