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Warehouse-sized asteroid sneaks up on Earth by hiding near the sun - CNET

Warehouse-sized asteroid sneaks up on Earth by hiding near the sun - CNET

Warehouse-sized asteroid sneaks up on Earth by hiding near the sun - CNET
Sep 27, 2021 35 secs

A space rock possibly as wide as a football field flew between the moon and Earth last week, but the big asteroid -- catalogued as 2021 SG -- wasn't spotted until the day after it had already made its closest pass by our planet.

While asteroid 2021 SG is safely heading back to deeper space, it provides a brief moment of deja vu for sky watchers who may remember the large bolide that went unseen until it exploded in 2013 above Chelyabinsk, Russia. .

That meteor was estimated to be only about one quarter the diameter of 2021 SG, and yet that was large enough to create a shock wave that blew out thousands of windows in the city below, injuring hundreds.

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