https://www.bbc.com/future/article/20251223-mercury-the-planet-that-shouldnt-exist
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12/28/25 at 10:00am
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BBC News
Author
Jonathan O'Callaghan
35 words
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Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission arriving in 2026 might solve the mystery.
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