pretendy: Why is the night sky dark? This is a question that at first sounds a bit stupid, but the observation that the night sky is dark is in fact a deeply profound one that provides much of the basis for modern cosmology. The question which has now

pretendy: Why is the night sky dark? This is a question that at first sounds a bit stupid, but the observation that the night sky is dark is in fact a deeply profound one that provides much of the basis for modern cosmology. The question which has now

tags: barely conscious, astronomy,astrophysics,cosmology,history,math,science,space,favorite,e,

from: https://wxynz.tumblr.com/post/21556342842