This resource covers general features of asteroids; the asteroid belt; Kirkwood gaps; the spacecraft Galileo flying by the asteroid Gaspra; the asteroid Ida and its moon Dactyl; the spin of the asteroid Toutatis; and...

This unit introduces students to some general concepts of astronomy. Topics include geocentric versus heliocentric theories of the solar system and how they explain the sun's movements, sidereal days versus solar days,...

The Solar System online course is maintained by the Department of Physics & Astronomy at the University of Tennessee. The twenty two chapters cover everything from time and scale in the universe, development of modern...

Students can find the world of college physics difficult at times, and it's always good to have a wide range of instructional materials on hand in case they need them. The University of Tennessee's Physics Department has...

The latest release from the National Academy Press is the free online version of Astronomy and Astrophysics in the New Millennium: Panel Reports. The book contains contributions from the Astronomy and Astrophysics Survey...