Orbiting at 19 miles a second, so it's reckoned...
December 3, 2009 2:11 AM Subscribe
Oh, so that's how that works. I never got the whole 'Mars in Retrograde' thing. This really helped. More than this description by Dr.Feynman of the elliptical orbit of the planets, and definitely more than this song-and-dance description of, well, the Universe.
This thread has been archived and is closed to new comments