The Andromeda Galaxy is the galaxy most visible to us from Earth. It has a mass equivalent to 400 BILLION suns and at the very core there exists a super-massive black hole. Even though the Andromeda Galaxy is the largest (with diameter 260,000 light years), it is not the most massive. Our very own Milky Way Galaxy is the most massive due to all the dark matter.
#spaceexploration – by @cosmic_odyssey on Instagram
