Lesson Plans     Astronomy (The Universe) Our Sun  Solar System/Planets Earth's Moon Mars The Asteroid Belt & Asteroids Comets Stars, Galaxies & Quasars Constellations Black Holes Eclipses   Famous Astronomers Copernicus, Ptolemy, Galileo, Kepler, Newton Telescopes Satellites Astronauts Space Travel Games & Kids Sites  Free Presentations in PowerPoint format for K-12 Science  Video Clips for Science      All Rights Reserved    Clip Art Credit: Phillip Martin Have a great year!