In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Arp 282: This image from the NASA/ESA Hubble Space Telescope feels incredibly three-dimensional for a piece of deep-space ...

NASA has captured breathtaking images of seven rare and stunning interacting galaxies, showcasing cosmic collisions, ...

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

NASA released six stunning images from the Hubble Telescope showcasing interacting galaxies, including the chaotic beauty of merg ...

Around 2015, astronomers took on the painstaking task of stitching together Hubble Space Telescope images of this galaxy, but that effort had focused on the galaxy's northern half. Still, however, the ...

Hubble’s high-resolution imagery allowed researchers to hone in on more of the Bullseye galaxy’s rings — and helped confirm ...

On February 6, 2025, NASA was releasing six breathtaking pictures of interacting galaxies taken through the Hubble Space Telescope. Such photos are scarce and show the detailed processes that are ...

Not far from the larger galaxy is a smaller one, seen in visible light images using the Hubble Space Telescope. Observations ...

Hubble worked hard, taking images of spiral nebulae every clear night and ... general relativity described an expanding universe. He recognized that space expanding in between the galaxies could cause ...