These interactive astronomy java applets were created for astronomy students at the University of British Columbia. They cover topics dealing with the solar system and demonstrate the phases of the inner planets, retrograde motion, Kepler's Laws, cratering and solar eclipses. Applets on stellar astronomy include: fusion in the sun, the Big Bang, extrasolar planets, black holes, the H-R diagram, binary stars, parallax, the Doppler Effect, and black body radiation. The last set of simulations deal with telescopes. They demonstrate Snell's Law, electrostatics, and properties of lenses and mirrors.