spiralbound space

remove Tue, Feb 26 2013 09:48

love this ugghh rage face awesome helpful golly whoa facepalm aha! fascinating

Ptak Science Books: On Holes in and Life on the Sun, 1787

The interesting hypothesis of sunspots as "holes" in the surface of the sun was made by Alexander Wilson (professor of astronomy at the University of Glasgow) in his paper "Observations on the Solar Spots" on 1 January 1774