Science What can you learn from watching a lunar eclipse? (+video)

A lunar eclipse is more than just a spectacle in the sky; scientists from ancient Greece to the present use them to discover deeper facts about Earth and its place in the universe.

By , Staff writer

Ross D. Franklin/AP/File

The Oct. 8 lunar eclipse has stargazers giddy with anticipation, because it promises a seemingly impossible view of both the eclipsed moon and the rising sun at the same time. But since the days of the ancient Greeks, astronomers have revered lunar eclipses of all kinds as keys to some of the mysteries of the solar system.