Nasa announces discovery of seven Earth-sized planets – video report

Nasa announced the discovery of seven Earth-like planets orbiting a star called Trappist-1, about 39 light years away, on Wednesday. The find has widely excited the astronomy community because of its implications in the hunt for alien life beyond the solar system. Three of the planets in the Trappist-1 system are in the habitable zone near the star and so could have water on their surfaces

Thrilling discovery of seven Earth-sized planets orbiting nearby star