So, if some of a comet's mass suddenly disappeared one day, its orbital period should remain unchanged. In the real world, however, mass does not simply disappear - it has to go somewhere. In a ...

Discovered on Sept. 27, 2024, by astronomers at the the ATLAS survey, Hawaii, comet ATLAS S1 is a long-period comet from the Oort Cloud, a sphere around our solar system that’s home to millions ...

On Jan. 12, NASA astronaut Don Pettit on the International Space Station sent back an image of comet ... [+] C/2024 G3 (ATLAS). A comet that hasn’t been in the inner solar system for around ...