Long before astronomers discovered the first exoplanet in 1992, the idea of worlds orbiting distant stars captivated the ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

Astronomers have confirmed the existence of four planets orbiting a star less than 6 light-years away with help from some of ...

The planets are all too hot for life as we know it, but astronomers haven’t given up searching for more planets in Barnard's ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

TRAPPIST-1 is a red dwarf star about 40.7 light-years away from Earth. It is of particular interest because it has seven ...

A decades-old cosmic mystery may finally be solved. Scientists now suspect that the strange X-ray glow from a distant white ...

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star, one of our closest stellar neighbours.