The circumgalactic medium, a vast gaseous halo surrounding galaxies, could be crucial to the evolution of star-forming galaxies like our own.

A year of discovery awaits, with missions poised to reveal new insights about our home planet, solar system, galaxy, and beyond.

New images from Webb Space Telescope reveal massive, ancient spiral galaxies.

A new image by the Chandra X-ray Observatory reveals an unidentified celestial object, dubbed C4, getting blasted by a jet of energetic particles, raising questions about its identity.