4 ms·
Wonderfully illustrated by Carl Sagan in the original Cosmos: http://www.youtube.com/watch?v=UnURElCzGc0 http://www.youtube.com/watch?v=UnURElCzGc0
by gdubs 12y ago
Wonderfully illustrated by Carl Sagan in the original Cosmos:
http://www.youtube.com/watch?v=UnURElCzGc0 http://www.youtube.com/watch?v=UnURElCzGc0
- shangxiao 12y agoSo that's what a tesseract is!