This month, NASA released the largest image ever taken of the Milky Way’s nearest neighbor—Andromeda Galaxy. The 4.3 GB image, taken by the Hubble Telescope, is 1.5 billion pixels large (69,536 x 22,230) and is made up of 411 separate images.
This video shows you the whole image and then zooms in so you can get a feel for the unthinkable number of stars. It takes you through 100 million stars (less than 1/1,000th of all the stars in Andromeda) and travels over more than 40,000 light years.
By the way: here’s how Andromeda would look in our night sky, if it were brighter.