"Are we alone?" This ancient question has occupied humanity's mind for a long time. In 1995, the discovery of the first ...

A quartet of Earth-like worlds ... researchers think we are looking at Barnard's Star from above, meaning its planets do not ...

The lone planet confirmed to be in the system is squeezed in between the two, orbiting at a distance similar to Earth's ...

Hounsell said white dwarf stars aren't much larger in size than planet Earth. Usually they're too dim to see at night, but when a nova happens, the sudden explosion can make the star shine ...

WASHINGTON, April 18 (Reuters) - In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above ... between Earth and the sun. The planet ...

A new "Tatooine-like" planet outside the solar system may orbit two failed stars, scientists reported Wednesday.Related video above ... blocked when seen from Earth.In a new analysis, researchers ...