Kepler telescope

Kepler telescope discovers 100 Earth-sized planets

Nasa's Kepler telescope has discovered more than 100 Earth-sized planets orbiting alien stars.

'Alien Megastructure' mystery may be solved

The mystery behind a the strange 'alien megastructure' could soon be solved.

'Earth 2.0' found in Nasa Kepler telescope haul

A haul of planets from Nasa's Kepler telescope includes a world sharing many characteristics with Earth.