Coiled and snakelike, a set of four identical shells surrounds a violent stellar dance 8,000 light-years from Earth.

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

Astronomers are reporting new findings about 3I/ATLAS, the rare interstellar comet now moving through the outer solar system, as NASA and research institutions expand monitoring of the object's ...

The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in ...