Moon
Links
The UnMuseum - Experiment: Ponzo and the Moon
http://unmuseum.mus.pa.us/exmoon.htm
Explains why the Moon looks bigger when its at the horizon.
Virtual Reality Moon Phase Pictures
http://tycho.usno.navy.mil/vphase.html
Pick a century, year, month, day, time, and time zone and see the phase of the moon.