The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician ...

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.

Even Earth and Mars may once have had rings. However, no study so far has definitively spotted rings around any of the solar system's 300-odd moons.

Earth may have had a Saturn-like ring system long ago, ... Even Saturn have long term rings despite large moons et cetera, but these became just 30 million years old (see the paper).

After a near miss with an asteroid 466 million years ago, Earth may have developed a Saturn-like ring of debris that lasted for tens of millions of years – and may have significantly affected ...

New Evidence: Earth Had Rings (and Might Regain Them) Season 11 Episode 1 | 16m 30s Video has Closed Captions | CC. There’s an extremely good chance that Earth once did have a ring system.

“Earth may have had more than enough ingredients to form water from the beginning,” said planetary scientist Patrick Shober, who was not involved in the research.