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

A comet called ATLAS dazzled the southern skies for the last few weeks. Now it's heading out of view for half a million years ...

The stars in this study range in ages from very young to middle-aged like our Sun. This new study shows how comets play a role in the formation of stars and planetary systems. Credit: Luca Matra.

For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are orbiting. This result reveals regions around 74 stars spanning a wide ...