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 ...

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

Centaurus A: NGC 5128 is a galaxy in constellation Centaurus, discovered in 1826 by Scottish astronomer James Dunlop. Messier ...

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

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda galaxy. The team includes several UC Santa Cruz researchers who made significant ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

First up is the Andromeda Galaxy, our closest neighbour in the cosmos, featuring stunning spiral arms and a vibrant central core. Next is the Whirlpool Galaxy, a breathtaking spiral with a ...

The Andromeda galaxy, then known as the Andromeda nebula ... Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they were ...

a galaxy that resembles a stripped-down core of a once-spiral galaxy, which may have interacted with Andromeda in the past. Computer simulations indicate that when a galaxy collides closely with ...