Possible new 'minimoon' discovered orbiting Earth
A small asteroid has been orbiting Earth for 3 years, astronomers say. Meet our newest minimoon.
(Image: © Shutterstock)
Tumbling through Earth's increasingly crowded orbit are about 5,000 satellites, half a million pieces of human-made debris and only one confirmed natural object: the moon. Now, astronomers working out of the University of Arizona's Steward Observatory think they may have discovered a second natural satellite — or at least a temporary one.
Meet 2020 CD3, Earth's newest possible "minimoon."
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