Two potentially habitable "super-Earths" orbit a star just 12 light years away that is our nearest sun-like neighbour, scientists have discovered.

TWO thousand, one hundred twenty-two people are living in a multigenerational starship, headed to Tau Ceti, 11.9 light-years from Earth.

Life would not have a chance on planets nearest the Earth’s solar system because of a blizzard of comets and meteors, astronomers have concluded after taking a close look at the star Tau Ceti.