Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some have already been found. Thanks to rapidly advancing telescope technology, ...

The mixture of gasses measured in exoplanet K2-18 b suggests it may have a global ocean beneath a hydrogen-rich atmosphere—and astronomers even spotted a tantalizing, though unconfirmed, sign of life.

Scientists have used data from NASA's retired planet-hunting space telescope 'Kepler' to discover that small and large worlds have very different upbringings. The team found that larger planets on non ...

The universe, as you probably know, is almost impossibly large. It is almost 100 billion light years across and consists of of billions of galaxies and trillions of stars. Thanks to recent ...

Beyond our solar system, countless alien worlds of lava, ice, water and noxious gas swirl through the cosmos. Here are some of the strangest exoplanets that scientists have discovered so far. When you ...