http://www.aaa3.net/how-to-scale-the-earth/
NASA Study Sheds Light on Ozone Hole Chemistry
A new NASA study of Earth’s polar ozone layer reinforces scientists’ understanding of how human-produced chlorine chemicals involved in the destruction of ozone interact with each other.
Scale of Earth, Sun, Rigel, and VY Canis Majoris. [full zoom at the end]
