Maybe the first life on Earth was part of an 'RNA world.' Artur Plawgo/Science Photo Library via Getty Images How life on Earth started has puzzled scientists for a long time. And it still does.

Humans have long imagined life on Mars, but what if the red planet actually delivered life to Earth in the first place?

IMAGE: A new study by CU-Boulder researchers indicates a thick organic haze shrouding Earth several billion years ago was similar to the one now hovering over Saturn’s largest moon, Titan. University ...

MADISON – Reading the telltale chemical signature of a mineral sample determined to be the world’s oldest known terrestrial material, scientists have reconstructed a portrait that suggests the early ...

Ancient Australian rocks suggest Earth’s continents formed later than expected and share a common origin with the Moon.

When you buy through links on our articles, Future and its syndication partners may earn a commission. New model suggests an ocean of magma formed within the first few hundred million years of Earth's ...

A new study by CU-Boulder researchers indicates a thick organic haze shrouding Earth several billion years ago was similar to the one now hovering over Saturn’s largest moon, Titan (above) and may ...

Earth’s distant future has always been framed as a slow fade billions of years from now, but a new generation of models is ...

Armed with that information, the researchers went about gathering samples from the areas of land that are believed to be the ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers ...

Earth may have gobbled up a Mercury-like body early in our planet’s history, and that may have helped create a heat source in our iron core—an energy source that would go on to generate the planet’s ...