Planets & Other Astronomical Topics
http://hea-www.harvard.edu/ECT/the_book/toc.html
http://pds.jpl.nasa.gov/planets/welcome.htm
http://seds.lpl.arizona.edu/nineplanets/nineplanets/nineplanets.html
http://www.extremescience.com/solarsys.htm (click on planets)
http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/planets.html
Galileo, Copernicus, Newton-
http://www-groups.dcs.st-and.ac.uk/~history/BiogIndex.html
-Galileo, Copernicus, Newton
http://allmath.com/biography.asp
-Galileo, Newton
Stonehenge
http://witcombe.sbc.edu/earthmysteries/EMStonehengeD.html
http://www.britannia.com/history/h7.html
Comets, Meteors, Asteroids
http://www.enchantedlearning.com/subjects/astronomy
http://www.dustbunny.com/afk/howdo/shower/shower.htm
Telescopes
Refracting: http://csep10.phys.utk.edu/astr162/lect/light/refracting.html
Reflecting: http://csep10.phys.utk.edu/astr162/lect/light/reflecting.html
Satellites
http://octopus.gma.org/surfing/satellites/satellite.html
Tides
http://www.ndbc.noaa.gov/educate/tides.shtml
http://sfgate.com/getoutside/1996/jun/tides.html
Eclipses
http://www.exploratorium.edu/eclipse
(lunar) http://www.dustbunny.com/afk/howdo/luneclipse/luneclipse.htm
(solar) http://www.dustbunny.com/afk/howdo/soleclipse/soleclipse.htm
Planets
http://www.dustbunny.com/afk/planets/planets.htm
http://www.enchantedlearning.com/subjects/astronomy
http://www.extremescience.com/solarsys.htm
http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/planets.html
http://www.the-solar-system.net
http://www.windows.ucar.edu/tour/link=/coloring_book/index_java.html