Once upon a time, Earth may have sported a planetary ring of its very own. The hypothetical ring didn't last long, cosmically ...

followed by a close encounter with a large asteroid passing through the Earth's Roche limit, which then created a ring of ...

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.

The science behind why the Earth will spin just a little bit faster on July 9, July 22, and August 5, this year.

Scientists used models of how Earth's tectonic plates have moved over that time to pinpoint where those impacts initially took place and found that all 21 impacts occurred close to the equator.

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.

(CNN) — Famously known for its extensive ring system, Saturn is one of four planets in our solar system that have the distinctive feature. And now, scientists hypothesize that Earth may have sported ...

The temporary structure likely consisted of debris from a broken-up asteroid. Earth may have sported a Saturn-like ring system 466 million years ago, after it captured and wrecked a passing ...

An illustration of Earth with a ring. Kevin M. Gill via Wikimedia Commons under CC BY 2.0. During a tumultuous period for our planet around 466 million years ago, Earth was pelted with meteorites ...

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.

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.

(CNN) — Famously known for its extensive ring system, Saturn is one of four planets in our solar system that have the distinctive feature. And now, scientists hypothesize that Earth may have ...