I f astronomers had been walking the Earth 466 million years ago, they may have had something special to see. The moon and the planets and the stars and the sun would have looked

During a tumultuous period for our planet around 466 million years ago, Earth was pelted with meteorites and rocked by tsunamis. But geologists have uncovered some strange things about this moment in history.

Researchers have found evidence suggesting that our planet may have once had a ring system around 466 million years ago.