Earth's systems are nearing tipping points that could plunge the planet into a "hothouse" regime — but there's still time to ...

The asteroid Ryugu is an echo from the deep, distant past. Two tiny grains of the rock, delivered to Earth in 2020 by the famous Hayabusa2 mission, contain minerals older than any found on our planet.

The newly discovered world is called GJ 251c and it is a super-Earth orbiting a red dwarf star less than 20 light-years away.

Despite having such a dry and rocky exterior, asteroids used to be overflowing with water on the inside. The ancient asteroids of the early solar system even carried out the most important delivery in ...