When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

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

This is the fourth comet Gröller has discovered, but given its extraordinary distance, it was the most exciting find, he says ...

Astronomers have discovered not one, but four tiny planets orbiting Barnard’s Star, our cosmic neighbor. These planets, each about a fifth the mass of Earth, whip around their host star in just ...