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

Uranus radiates more energy than it gets from the sun, two new studies find — just as Jupiter, Saturn and Neptune do.

Discover Plastic Ice VII, an exotic phase of water with both solid and liquid-like properties. Learn about its formation, ...

NASA has launched the SPHEREx telescope to uncover the ingredients for life in our galaxy, as well as the PUNCH mission to study the sun’s mysteries.