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