1:58
Explore Ptolemy's earth-centered model of the cosmos.
1:45
Get a glimpse into the world's oldest complete creation story through animation.
2:03
Astronomer Phil Plait explains how ancient civilizations aligned their buildings.
3:05
Ancient Skies recounts the Ancient Greek myth of Icarus through detailed animation.
2:56
Georges Lemaître proposes that the universe is expanding.
