San Antonio College Library

This complete practical guide and resource package instructs amateur astronomers in observing and monitoring variable stars and other objects of variable brightness.

An astronomer recently made an unexpected discovery - that the universe is expanding faster than ever and is actually being pushed apart. This episode of NOVA follows two rival astronomy teams as they work to unlock the secrets of the universe, including the riddle of a mysterious force that some scientists believe counteracts gravity. Stunning three-dimensional cosmic simulations captured with revolutionary high-definition technology illustrate the...