Tiny zircon crystals are revealing that Earth’s earliest history may have included surprisingly complex tectonic activity.

The idea of waging war in orbit is no longer a figment of science fiction. As satellite technologies and launch capabilities ...

A study published this week in Nature Communications posits that Earth's core holds a lot of hydrogen. The range is from nine to 45 oceans' worth of hydrogen, mostly locked up in the form of iron ...

According to these calculations, Earth's total lifespan will be about 9.5 billion years.

Researchers studying the deep biosphere, Earth’s largest ecosystem, have found evidence that life thriving miles below the ...

Stephen Hawking used his fame to warn humanity about its potential — and rapidly approaching — end. He proposed space travel as a solution, but is that viable?

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form.

WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that formed beyond the orbits of its gaseous ...

Astronomers have uncovered a distant planetary system that flips a long-standing rule of planet formation on its head. Around the small red dwarf star LHS 1903, scientists expected to find rocky ...

Since the 1990s, astronomers have found a handful of other dwarf planets in the belt, such as Eris and Sedna, along with ...

A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped ...

Scientists have long debated whether most of Earth's vital liquid was delivered via icy comets or was homemade ...