The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician period—which ran between 485.4 million years and 443.8 million years ago ...

What the world was like a million years ago ... (2.5 million years BC to 11,711 years BC), and Earth was five to 10 degrees colder than it is today.

If you were to look up from Earth some 466 million years ago, you might have seen a gleaming ring stretching across the sky, some scientists say.

Earth may have sported a Saturn-like ring system 466 million years ago, after it captured and wrecked a passing asteroid, a new study suggests. The debris ring, which likely lasted tens of ...

In a discovery that challenges our understanding of Earth's ancient history, researchers have found evidence suggesting that Earth may have had a ring system that formed around 466 million years ...

Anyone living on Earth between 720 million and 635 million years ago probably would've needed a jacket. Geologists have long suspected that Earth's temperature dropped dramatically during this ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature could explain a climate shift at the time.

Around 717 million years ago, the Earth froze over and became a giant snowball for at least five million years. In a new study, Harvard scientists suggest that the answer to this mystery might lie ...

The hothouse Earth at the end of the Triassic was most likely to be caused by supermassive volcanic eruptions, say our readers, ... Earth was a hothouse 201 million years ago, ...

Dec. 7, 2022 — Dinosaurs dominated the world right up until a deadly asteroid hit the earth, leading to their mass extinction, some 66 million years ago, a landmark study reveals. Fresh insights ...