NASA's James Webb Space Telescope has spotted a young star flinging heat-formed crystals outward on a cosmic conveyor belt, offering a new clue to how comets evolve. "Instead of Webb's 6.5-meter ...

A spectacular new image from the James Webb Space Telescope reveals intricate structures inside the Helix Nebula, where a dying sunlike star is enriching the galaxy with the elements needed for life.

The James Webb Space Telescope and the Chandra X-ray Observatory have captured the clearest image yet of a galaxy cluster in the making, seen when the universe was only one billion years old.

Turn your phone into a portable planetarium, map the night sky and discover the best place and time to observe February's solar eclipse, with the best stargazing apps.