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San Antonio Astronomical Association

Mysteries and Wonders of the Universe

Cassini Photo Essay

A Ring-Side View of Saturn

All That Planetary Jazz

Among the most exciting and challenging questions facing 21st century astronomy are these: Is our solar system typical of the planetary systems around stars? In what sense? And how does this affect the chances for life elsewhere?

Scientists prove Einstein right again,

The first effort to measure how quickly gravity exerts its influence indicates that it matches the speed of light, upholding Einstein's theory of relativity

Speed-of-light debate flashes again,

The speed of light may not be a constant, based on a study of quasars and the surroundings of black holes.

Defenses Down,

Galactic Dust Storm Hits Solar System

Questioning the Big Bang,

Could universe follow a cycle without end?

Cosmic Orphans

Stray Stars found Wandering Between Galaxies