The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with more than 200 million individually resolved stars.
Image: CfA/Mel Weiss Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the very first time, and it’s shedding new light on ...
Astronomers have discovered a unique collisional ring galaxy, nicknamed the "Bullseye," that features nine rings, the most observed in a collisional ring galaxy to date.