This collection of astronomy lesson plans and experiments from across the internet was developed by Reach Out, a center linking University of Michigan and community mentors with children and teens. Topics covered include...

This online magazine offers news articles on topics including: the search for extrasolar planets that resemble Earth; mapping the dark matter of the cosmos; black holes; current space missions; the relation between the...

An algebra-based overview of elementary and pre-telescope astronomy. Topics covered include sundials, seasons, calendars, precession, shape and rotation of Earth, Greek astronomy, the path to heliocentric theory and...

Each day a different image or photograph of a celestial object is featured. Pictures are selected for their particular beauty or astronomical interest, and each one is accompanied by a brief caption written by a...

Created by author Nick Strobel, "Astronomy Notes" is an educational resource for introductory astronomy classes for undergraduates. This section describes: the celestial sphere, coordinate systems, the motion of the...