Many sources were used to write the articles in this webpage. They are listed below.

Sun:

Mercury:

• McManus, Jason, Ed. The Near Planets. Richmond, Virginia, Time-Life Books Inc, 1989.
• Spinrad Ph.D., Hyron. "Mercury [Planet]," World Book Multimedia Encyclopedia. Chicago: World Book Inc., 1997.
• Williams, Dr. David R., "Mercury Fact Sheet," Planetary Fact Sheets. Online. Visited 7 August 1999.
  http://nssdc.gsfc.nasa.gov/planetary/factsheet/mercuryfact.html

Venus:

• Grinspoon, David Harry. Venus Revealed. New York; Reading, Massachusetts; Menlo Park, California; Don Mills, Ontario; Harlow, England: Addison-Wesley Publishing Company, Inc., 1997.
• Head, James W. "Venus [Planet]" World Book Multimedia Encyclopedia. Chicago: World Book Inc., 1997.
• McManus, Jason, Ed. The Near Planets. Richmond, Virginia, Time-Life Books Inc, 1989.
• Robinson, Cordula. "Magellan Reveals Venus," Astronomy. Febuary 1995.
• Williams, Dr. David R., "Venus Fact Sheet," Planetary Fact Sheets. Online. Visited 7 August 1999. http://nsssdc.gsfc.nasa.gov/planetary/factsheet/venusfact.html

Earth:

Moon:

• Guterl, Fred. "What Should We Do With the Moon?" Discover Magazine. Sept. 1998: 73-84.
• Spudis, Paul D. The Once and Future Moon. Washington and London: Smithsonian Institution Press, 1996.

Mars:

Jupiter

• Beebe, Reta. Jupiter- The Giant Planet. Washington: Smithsonian Institute Press, 1997.
• Spinrad, Hyron. "Jupiter." World Book Multimedia Encyclopedia. Chicago: World Book Inc., 1997.

Saturn:

Uranus:

Neptune:

Pluto:

Asteroids & Comets:

• Bone, Neil. Meteors. Cambridge, Massachussetts: Sky Publishing Corporation, 1993.
• Levy, David H. Comets: Creators and Destroyers. New York: Touchstone, Simon & Schuster, 1998.

Space Travel:

• Williams, Walter C. "Mercury project overview." Online . August 15, 1999. http://www.ksc.nasa.gov/history/mercury/mercury-overview.txt . By Walter C. Williams, Deputy Director for Mission Requirements and Flight Operations, NASA Manned Spacecraft Center; Kenneth S. Kleinknecht, Manager, Mercury Project, NASA Manned Spacecraft Center; William M. Bland, Jr., Deputy Manager, Mercury Project, NASA Manned Spacecraft Center; and James E. Bost, Chief, Engineering Operations Office, Mercury Project Office, NASA Manned Spacecraft Center.

• This New Ocean: A History of Project Mercury By Loyd S. Swenson Jr. James M. Grimwood Charles C. Alexander Published as NASA Special Publication-4201 in the NASA History Series, 1989. http://www.hq.nasa.gov/office/pao/History/SP-4201/toc.htm

• On the Shoulders of Titans: A History of Project Gemini by Barton C. Hacker and Charles C. Alexander Published as NASA Special Publication-4203 in the NASA History Series, 1977.http://www.hq.nasa.gov/office/pao/History/SP-4203/toc.htm

Current Events:

Pete Conrad dies:

• Rogers, Adam. "A Free Spirit." Newsweek, July 19, 1999, pp. 12.
• Sawyer, Kathy. "Pioneer Of the Final Frontier." Washington Post, July 10, 1999, C1 & C3.
• Smith, J.Y. "Astronaut Charles P. 'Pete' Conrad Jr. Dies." July 10, 1999. (July 15, 1999).

Demoted?:

• Begley, Sharon & Tara Weingarten. "Pluto? Try 'Trans-Neptunian Object.'" Newsweek, Febuary 1, 1999, pp. 73.

Martian Face not Martian

• "A Mars Makeover," Newsweek. April 20, 1998

Teacher Resources:

• Adams, Douglas. The Hitchiker's Guide to the Galaxy. New York : Harmony Books, 1980.
• Adams, Douglas. The Resturaunt at the End of the Universe. New York : Harmony Books, 1981, c1980.
• Adams, Douglas. So long, Thanks for all the Fish. New York: Harmony Books, 1985.
• Clark, Arthur C. 2001: A Space Odyssey. New York, New York: ROC (Penguin Group), 1968.
• Cole, Joanne. The Magic School Bus Lost in the Solar System. New York, Toronto, London, Auckland, Sydney: Scholastic Inc. 1990.
• Coville, Bruce. My Teacher Fried My Brains. New York: Pocket Books, 1991.
• Coville, Bruce. My Teacher Glows in the Dark. New York: Pocket Books, 1991.
• Coville, Bruce. My Teacher Is an Alien. New York: Pocket Books, 1990.
• Coville, Bruce. My Teacher Flunked the Planet. New York: Pocket Books, 1992.
• Harding, Lee. The Fallen Spaceman.  Toronto, NewYork, London, Sydney, Auckland: Bantam Skylark Book, 1980. 
• Pinkwater, Daniel. 5 Novels: Alan Mendelson,the Boy From Mars; Slaves of Spiegel; The Snarkout Boys and the Avocado of Death; The Last Guru; Young Adult Novel. New York: Farrar Straus Giroux, 1997.
• Pinkwater, Daniel. Fat Men from Space. Dodd, Mead & Company: New York, 1977.
• Pinkwater, Daniel. Mush, a Dog from Space. Antheneum Books for Young Readers: New York, 1995
• Pinkwater, Daniel. Ned Feldman, Space Pirate. Macmillan Publishing Company: New York. Maxwell Macmillan Canada: Toronto. Maxwell Macmillan International: New York, Oxford, Sinagpore, Sydney, 1994.
• Pinkwater, Daniel. Spaceburger: A Kevin Spoon and Mason Mintz Story.  Macmillan Publishing Company: New York. Maxwell Macmillan Canada: Toronto. Maxwell Macmillan International: New York, Oxford, Sinagpore, Sydney, 1993.
• Summers, Robert S. "Special Message to the Congress on Urgent National Needs," John Fitzgerald Kennedy, The Internet Public Library Presidents of the United States (POTUS) Online. Visited 13 August, 1999. http://www.cs.umb.edu/jfklibrary/j052561.htm

Glossary:

• O'Dell, C.R. "Lowell, Percival." World Book Multimedia Encyclopedia. Deluxe Edition. USA: World Book Inc., 1997.
• Steinmetz, Sol. ed. **Various Entries** Random House Webster's College Dictionary. New York: Random House, 1997. Entries include: astronomical unit, density, meter, satellite, and telescope.

Understanding the Universe: A History: