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A Monash University-led study on the Ordovician meteor event provides evidence that rings may have existed

around Earth approximately 446 million years ago.

Published September 24, 2024· Updated October 28, 2026·1 min read

Context: Prosecution of S Iswaran.

A Monash University-led study on the Ordovician meteor event provides evidence that rings may have existed around Earth approximately 446 million years ago.

Event summary via Wikipedia Current Events (2024-09-24).