Some mind-blowing facts about the Andromeda Galaxy | The Secrets Of The Universe

If an alien species in the Andromeda galaxy were to look through a telescope at Earth, what would they see? #WorldSpaceWeek | The Royal Society

Zoom into the Andromeda galaxy The largest NASA Hubble Space Telescope image ever assembled, this sweeping view of a portion of the Andromeda galaxy (M31) is the sharpest large composite image ever taken of our galactic neighbor. Though the galaxy is over 2 million light-years away, the Hubble telescope is powerful enough to resolve individual stars in a 61,000-light-year-long section of the galaxy's pancake-shaped disk. It's like photographing a beach and resolving individual grains of sand. An