James Gunn’s Superman is the fun, hopeful DC movie Justice League (2017) wanted to be, but wasn’t. Superman Is Justice League ...

This breathtaking Hubble image of spiral galaxy NGC 1309 reveals more than swirling stars and glowing dust—it holds a cosmic mystery.

An infinity symbol–shaped galaxy hosts an active supermassive black hole. The growing giant may have come from the aftermath of a galactic smashup.

This paper provides concrete evidence that the expanding and accelerating Universe mathematically expressed by dark energy is ...