Extras

Video thumbnail: Secrets of the Dead Galileo's Moon

Secrets of the Dead

Galileo's Moon

Join experts as they examine an alleged proof copy of Galileo’s “Sidereus Nuncius.”

Galileo's Moon

Video thumbnail: Secrets of the Dead The Center of the Universe

Secrets of the Dead

The Center of the Universe

Galileo challenged the widely-accepted belief that the universe revolved around the earth.

The Center of the Universe

Video thumbnail: Secrets of the Dead Forgery 101

Secrets of the Dead

Forgery 101

Experts explain how a fake Sidereus Nuncius made its way into infamy.

Forgery 101