REFERENCES

Holt Science, by Holt, Rinehart and Winston, Publishers, 1986.

http://schools.sbe.saskatoon.sk.ca

httP://seds.lpl.arizona.edu/nineplanets/niniplanets/earth.html

http://seds.lpl.arizona.edu/nineplanets/nineplanets/luna.html

http://www.absoluteastronomy.com/constellations/draco.htm

http://www.absoluteastronomy.com/planets.htm

http://ausmall.com.au

http://bridgewater.edu/departments/physics/LSAW/PlanetOrbit.html

http://www.enchantedlearning.com/subjects/astronomy/solarsystem

http://www.solarviews.com/eng/sun.htm