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Asteroid the size of 100 hot dogs to pass Earth on Monday - NASA
(www.jpost.com)
News and findings about our cosmos.
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This was a thing on Reddit as well.
I think it came from the headlines in a few articles that would say things like an asteroid the size of a car… and an asteroid the size of an elephant and two giraffes.
I think after a while it became an accepted meme to just report the size of the asteroid by comparing it to something random instead of just posting the metric size.