Tuesday, August 25, 2015

Earth - What is our Universe made of? Presented by Melissa...



Earth - What is our Universe made of?
Presented by Melissa Hogenboom, bbc.com

If an alien managed to visit our Universe from a parallel reality, there is a high chance they would not even notice we exist.

In a way that’s obvious: the Universe is enormous and our planet is but a …



via Tumblr http://ift.tt/1JitKi3