This is a 1.5 billion pixel image of the Andromeda galaxy (the closest one to ours, about 2 million light-years away) taken from NASA's Hubble telescope. It spans 40,000 light-years and 100,000,000 stars -- and it's not even the whole galaxy. Prepare to feel like an extremely tiny piece of the universe...
Read more about this image here.
Labels: picture of the day