Voyager 1 has been heading outward from Earth for almost half a century, but where is Voyager 1 now and how much longer will it be able to stay in space?

It is a little bigger and somewhat colder, but a planet circling a star 500 light-years away is otherwise the closest match of our home world yet discovered, astronomers announced yesterday.

The planet, which is five times the size of Earth, lies in Tau Ceti’s “habitable zone.” That means that the distance of the planet from the star allows for temperatures to be at a level ...

An artist s impression of HD 131399Ab, which is 320 light years from Earth. A PLANET with three suns has trumped Hollywood by proving that astromical fact can indeed be stranger than fiction.

As the planet orbits and the stars grow further apart each day, they reach a point where the setting of one coincides with the rising of the other – at which point the planet is in near-constant ...