Nasa says: 'Astronomers are on the cusp of finding something people have dreamed about for thousands of years - another Earth'
Nasa has announced the discovery of Kepler 452B by their Kepler space telescope - a planet very similar to Earth in the Milky Way, that could well have liquid water on the surface. Here are the latest updates:
It's the most similar planet to Earth that's ever been discovered. - Kepler 452B