bibliography                                                Bibliography 

Text Sources:

Kraske, Robert. Asteroids Invaders from Space. New York, New York: Atheneum Books for Young  

          Readers,1995.

Simon, Seymour. The Long Journey From Space. New York: Crown Publishers, Inc,1982.

"Comets". Online Posting. 12 November 2003  http://whyflies.org/ comets/general info.

Pictures, Backgrounds and Midi files were taken from the following websites.

Pictures and Backgrounds:

•      :http://www.eskimo.com/~physmith/Backgrounds.html

•         Background City:  http://www.backgroundcity.com/

•         Absolute Background Textures: http://www.grsites.com/textures/

•         Amazing Picture Machine: http://www.ncrtec.org/picture.htm

•         Clip Art Warehouse:  http://www.clipart.co.uk/html/anim.shtml

•         Animation Factory: http://www.animfactory.com/

•         Animation Library: http://www.animationlibrary.com/a-l/

•         Barry's Clip Art :   http://www.barrysclipart.com/

•         Web Graphics:     http://www.schoolicons.com/eng/index/attention.html

•         Cartoon Cottage: http://www.cartooncottage.com/

•         Awesome Clip Art For Kids: http://www.awesomeclipartforkids.com/

•         Discovery Channel School Clip Art Gallery http://school.discovery.com/clipart/

               Clip Art : www.alienexplorer.com/clipart/ 

Mid Files:

•         DMOZ midi directory: http://dmoz.org/Arts/Music/Sound_Files/MIDI/Themes/

•         Midi Land: http://web.tiscali.it/midi_land/midifiles/