Further Reading

Croswell, Ken. Does Life Exist at Alpha Centauri?: Astronomy. (American publication) April 1991, pp.28-37.

Couper, Heather & Henbest, Nigel. 1992, The Collins Space Atlas: A Pictorial Atlas of our Universe. Pymble, NSW, Australia: Collins Angus & Robertson Publishers.

Darling, David. Star Trek: The Adventure Begins: Astronomy (American publication). March 1987, Volume 15, Number 3, pp.94-99.

Jastrow, Dr Robert. The UFO Debate Goes On: Omega Science Digest. March/April 1981, pp.110-111 & 115.

McGraw-Hill Encyclopedia of Science and Technology. New York: McGraw-Hill Inc., 1987, 1992.

Nicolson, Iain & Moore, Patrick. 1985, The Universe. London: William Collins Sons & Co Ltd.

Ridpath, Ian. 1963, Messages from the Stars. England: Fontana Books.

Savage, Marshall T. 1994, The Millennial Project: Colonizing the Galaxy in Eight Easy Steps. New York: Little, Brown and Company.

Sternbach, Rick. Journey to the Stars: Omega Science Digest. September/October 1983. pp.46-55.

The Encyclopedia of Space Travel and Astronomy. 1979. London: Octopus Books Limited.