That beautiful waxing and waning nightlight in the sky is not Earth's only moon, according to a report published in the journal Icarus.
A group scientists argues Earth actually has two moons.
First, the one most people know about and can see each night. Then, a series of "temporary moons" no bigger than a small car that orbit the Earth for a time before zipping off into outer space.
"There are lots of asteroids in the solar system, so chances for the Earth to capture one at any time is, in a sense, not surprising," co-author Jeremie Vauballion, an astronomer at the Paris Observatory in France , was quoted as saying.
To learn what limits man's ability to find all these "other moons," read more on MSNBC.com.
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