Researchers at Cornell University say that what we know as the Moon is in fact not the only one orbiting our planet at any given time. Smaller objects regularly inhabit the Earth's orbit, usually leaving after a few months to continue on their celestial journeys.
The discovery is considered a major breakthrough for space research because scientists had been working toward visiting asteroids outside of Earth's orbit for research. While these temporary moons are too small for a shuttle landing, they are prime for research from a relatively close distance.
Earth has more than one moon, astronomers confirm | The Sideshow - Yahoo! News
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