Showing posts with label Universe. Show all posts
Showing posts with label Universe. Show all posts

Wednesday, September 3, 2008

How big is our Universe?

"If the Earth is the size of a pea in New York, then the Sun is a beachball 50m away, Pluto is 4km away, and the next nearest star is in Tokyo. Now shrink Pluto's orbit into a coffee cup; then our Milky Way Galaxy fills North America." — Wayne Hayes.