Ask Smithsonian: Why Are Planets Round?
The answer has everything to do with falling flat on your face (0:54)
The answer has everything to do with falling flat on your face (0:54)
Copyright © 2017 | Legal Statement | Sitemap | Contact PAESTA
PAESTA is funded by the National Science Foundation:
Award # DUE-0962792 & Award # GEO-0631377