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A strange circle on satellite maps turned out to be a 390-million-year-old impact crater
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ScienceDaily (all)EN
September 22, 2026

A strange circle on satellite maps turned out to be a 390-million-year-old impact crater

An amateur astronomer searching satellite maps for a Quebec camping spot accidentally discovered a massive ancient impact crater. Scientists later found shatter cones that confirmed the 25-kilometer-wide structure was blasted into Earth roughly 390 million years ago.

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Curated from ScienceDaily (all). Classified as Science by AI, which sometimes makes mistakes.

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