Galaxies

The earliest example of the Milky Way cannibalising a smaller galaxy for its growth involved a cosmic meal that left a scar at the heart of our galaxy.

James Webb Space Telescope is finding that between the brightest stars, the cosmic skyscrapers, there are much fainter stars, meaning early galaxies are more massive than we believed.

The "Black Eye Galaxy" is captured in a gorgeous new composite image from the Hubble and James Webb space telescopes.

The Milky Way has a secret history of galaxy mergers that we are only now starting to uncover.

Andromeda has slowed its star-forming rate over the last 40 million years. Scientists think they finally know why.

A slowly rotating stellar halo was the clue to a major and unknown event in the Milky Way's history that saw the spiral disc flip over by more than 90 degrees.

"We believe that the mechanism that 'turns on' these gigantic radio emissions is linked to the formation process of galaxy clusters."

Infant stars celebrate their independence with cosmic fireworks in a stunning new image from the James Webb Space Telescope.

NASA's Chandra X-ray Observatory has released four stunning images of cosmic wonders, depicted in red, white and blue for the America 250 anniversary on July 4.

Using the James Webb Space Telescope, astronomers have spotted a massive and densely packed galaxy cluster at "cosmic noon" before such structures were thought to be possible.