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

Astronomers are getting used to a strange new kind of cosmic mystery: worlds that seem to appear in their data, linger for ...

The small, icy visitor now racing away from the inner solar system is not just another comet. It is an interstellar object, ...

Belfast-based educational content provider offers teachers, parents and schools free access to one of the UK’s most comprehensive curriculum-aligned collections Quality education should be accessible ...

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its ...

Two separate research teams have observed a previously unseen microlensing event, confirming the existence of a particular ...

Gaia data reveals signs of planets forming around young stars by measuring stellar motion, identifying planetary, brown dwarf, and stellar companions in early star systems ...

Researchers have confirmed the mass of a free-floating planet thanks to a lucky convergence of ground- and space-based ...

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.

A new research paper reframes the simulation hypothesis, asking whether reality could be simulated and what science can test.