To the Moon and Back

4.5 billion years ago, an object the size of Mars crashed into Earth, blowing out enough material to form a companion sphere, the Moon. Within weeks, scientists believe, this material reassembled itself into a clump, and a year later it formed the spherical rock we know now as the Moon.

Most of Moon’s material, it is thought, came from the Earth’s crust, not it’s core, hence why the Moon has so little iron while the Earth has plenty.

Found in: Bill Bryson, A Short History Of Nearly Everything

Found something interesting in a book yourself? We’d love to publish it in our found in books series! Feel free to send us your finds on Facebook, Twitter or using our Contact Page. Don’t forget to specify the book title and author, and your blog/website link if you have one!

Leave a Reply