Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...

A newly discovered space rock will zoom safely by Earth later today (Oct. 15) at only about a quarter of the average distance ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Astronomers have discovered an alien world that defies every planetary rule with its massive size, low density, and tilted ...

MIT scientists have discovered ancient rock samples from Greenland, Canada, and Hawaii exhibiting a rare potassium-40 deficit ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

Scientists at MIT and elsewhere have discovered extremely rare remnants of "proto Earth," which formed about 4.5 billion ...

Researchers at Chalmers University of Technology in Sweden and the US space agency NASA have made an unexpected discovery ...

The largest trackway, now known as the dinosaur superhighway, extends across the quarry and is believed to have been made by ...

Planet-heating methane is escaping from cracks in the Antarctic seabed, with new seeps being discovered at an “astonishing ...

Far beyond Neptune, something massive may be warping the orbits of distant worlds. This film follows the scientists chasing Planet 9 — and the evidence that keeps them searching.