"Astronomers use this photo to estimate the number of galaxies in the known universe by counting the visible galaxies shown and multiplying the number of such photos it would take to make a composite of the entire sky. Their calculations estimate that the observable universe contains about 100 billion galaxies."
If you're busy* you only need to watch about 2 minutes to get the essence. But then we'll see if you're not curious enough to finish it. Read more from lé source here.
*You're not. You're here.
No comments:
Post a Comment