A comet tearing through the inner solar system at roughly 58 kilometers per second formed between 10 and 12 billion years ago ...
A comet born around another star is carrying water unlike anything ever measured in our solar system. Observations of ...
Astronomers call this "eruptive mass loss," and it's a stellar drama we're still trying to fully grasp.
The 570-megapixel Dark Energy Camera in Chile has captured an extended halo and a dust-filled disk around the hat-shaped ...