Astronomy has a way of defying labels. Just when researchers think they've drawn a clean line between two cosmic categories, ...

Our solar system is a passenger on a galactic rollercoaster. Part 2 reveals how the Sun, carrying Earth, orbits the Milky Way's core at 491,000 mph, completing a circuit every 230 million years. We ...

Strongest evidence yet for an atmosphere on a rocky planet outside our solar system - a thick blanket of gases above an ocean of magma.

Researchers using NASA's James Webb Space Telescope have detected the strongest evidence yet for an atmosphere on a rocky planet outside our solar ...

Avi Loeb (AL): A comet is defined as an object that sheds dust and gas as a result of the illumination of pockets of ice on ...