Hacker News
- Earth may have had a ring system 466 million years ago https://www.monash.edu/science/news-events/news/current/earth-may-have-had-a-ring-system-466-million-years-ago 26 comments
- Researchers have found evidence suggesting that Earth may have had a ring system, which formed around 466 million years ago, at the beginning a period of unusually intense meteorite bombardment known as the Ordovician impact spike https://www.monash.edu/science/news-events/news/current/earth-may-have-had-a-ring-system-466-million-years-ago 30 comments science