One striking example is the asteroid impact 66 million years ago that ended the ... and Implications While Earth’s ancient ring system likely dissipated after 20 to 40 million years, similar ...

Earth may have had a ring system that came into existence around 466 million years ago, a new study has suggested. This was the period when our planet was bombarded with unusually intense ...

The mystery of the Indian Ocean gravity hole: A chapter in the evolving history of Earth Up to 20 million years ago existed the Indian Ocean gravity hole in that time, while then to-date nothing by ...

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 ...

An ancient bird that swam in Antarctica’s balmier waters 69 million years ago may be the earliest known waterfowl on Earth, scientists ... iaai was first described about 20 years ago, from ...