Resources

"The First Telescope." TOOLS of Cosmology. 2014. Web.

"Types and Uses of Satellites." Web.

"10 Amazing Telescopes." Space Exploration. Discovery Communications. 2014. Web.

Redd, Nola Taylor. "How Fast Does Light Travel?/The Speed of Light." Space.com. Web. May 22, 2012.

"Human Spaceflight and Exploration." esa. Web.