Ancient Skies | Clip | Earth-Centered Cosmos
Explore ancient astronomer Ptolemy's model of the cosmos, which placed the Earth at the center of everything.
Explore ancient astronomer Ptolemy's model of the cosmos, which placed the Earth at the center of everything.
Discover how centuries of knowledge, experimentation and engineering helped our ancestors understand the mysteries of space. Expert contributors decode astronomical myths and uncover the science behind their origins.