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Although Earth only has one moon, it does have other natural satellites, including asteroid 2016 HO3, known as a "co-orbital object." These tiny celestial objects could be an "attractive location for extraterrestrial intelligence," according to a new study.

The research suggests that these space rocks could be hiding grounds for an advanced civilization, given their small size and close proximity to the planet.

"These near-Earth objects provide an ideal way to watch our world from a secure natural object," the study's abstract reads. "That provides resources an ETI [extraterrestrial intelligence] might need: materials, a firm anchor, and concealment. These have been little studied by astronomy and not at all by the Search for Extraterrestrial Intelligence (SETI) or planetary radar observations."

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Category: Science