Showing posts with label carl sagan. Show all posts
Showing posts with label carl sagan. Show all posts

Saturday, February 16, 2008

Carl Sagan 4th Dimension Explanation


Carl Sagan 4th Dimension Explanation

World famous astronomer and astrophysicist, the great Carl Sagan, explains the 4th dimension. Featuring the 4 dimensional Hypercube aka Tesseract!