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Thanks, Vardhan!

19 Feb 2014, 19:55 UTC
Thanks, Vardhan!
(200 words excerpt, click title or image to see full post)

Another request we’ve had recently for a blog entry comes from user Vardhan, who would like to know about an amazing phenomenon called a Black Hole. The following, then, is an excerpt from Out There – A Small Guide to a Big Universe, a book written by our own Joe Latrell and Steve Shurtleff: The Earth, along with all the other planets in our Solar System, revolves around the Sun because of gravity. This is the same force holding you to planet Earth. We also know that galaxies revolve around their cores because of gravity, and lots of it. So...

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