For thousands of years, humanity has wrestled with the idea we may not be alone in our solar system. Speculation that aliens might exist dates back to philosophers in ancient Greece, but it was the ...

A water world ruled by octopus-like creatures. A planet divided by light and dark where the sun never rises. And a lava hell where molten rock rains from the sky. These are not descriptions of foreign ...

A rare six-planet solar system, unchanged for billions of years, has been discovered 100 light-years from Earth. The planets are all ‘sub-Neptunes’, meaning they are smaller than our Neptune, and ...

Scientists are looking for evidence of alien technology in a faraway solar system with the most perfect mathematical alignment and synchrony of planets ever seen. The solar system, about 100 light ...

Asteroid experts at São Paulo State University's Institute of Geosciences and Exact Sciences have identified 19 space rocks of interstellar origin. The space rocks are classed as Centaurs - ...

South African-born billionaire Mr Musk has tasked himself with conquering the solar system, with his first target being Mars. However, Mr Musk may have to compete with aliens when looking to occupy a ...

A MYSTERIOUS signal sent to Earth by "Aliens" nearly half a century ago came from a far-away solar system similar to our own, a scientist has claimed. Known as the "Wow!" signal, the strange ...