Hypothetical moon of Mercury

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At a glance

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Science and technology

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What Wikipedia says

Mercury is the closest planet to the Sun and lacks any natural satellites. An undiscovered moon orbiting the planet was hypothesized to exist in the early 1970s, but it turned out to be misinterpreted data from the star 31 Crateris.

Excerpt from the Wikipedia article “Hypothetical moon of Mercury”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington. Edited version of Image:Mercury in color - Prockter07.jpg by Papa Lima Whiskey., Public domain, via Wikimedia Commons.