We currently know of more than 5,800 planets beyond the solar system, but we've only found the tiniest fraction of the exoplanets that astronomers think lie elsewhere in the universe.

In a new study, researchers at the University of Chicago have discovered in simulations that a small body under half the size of the Earth would be able to cool a moon's subsurface ocean for more than ...

While radio waves are the method of choice when searching for signals of intelligent alien life, other detectable signs also ...

A new Big Bang model does away with speculative elements, putting gravitational waves at the forefront of the creation of ...

In another universe, free-range planets could host life A tightly packed cosmos could provide habitable zones at galactic fringes ...

Ten planets that appear to be drifting in interstellar space have been spotted by an international team of astronomers. The planets are so far from any host stars that they may not orbit a star at all ...

This is pretty great news for a couple of reasons. First of all, if you’re holding out hope that we are not alone in the universe, your odds just got a lot better. The more planets there are out ...

HIGH above us in the distant reaches of space lie planets of every shape, size and colour. But just how many are in the universe, and what is the nearest planet to Earth?

HIGH above us in the distant reaches of space lie planets of every shape, size and colour. But just how many are in the universe, and what is the nearest planet to Earth?

Not all planets have a home. For decades, astronomers and science fiction authors alike have speculated about orphaned orbs cast adrift from their home stars, endlessly wandering the boundless ...