However, spotting the crucial evidence in our planet's geological record — a 14-million-year-old spike in the abundance of a rare iron isotope called iron-60, which is commonly released by supernovas ...

A senior climate risk expert has warned of increasingly frequent and irreversible catastrophic changes on Earth as global ...

Researchers have proposed that Earth may have had a ring system 466 million years ago, during a period of intense meteorite bombardment known as the Ordovician impact spike. This finding ...