Space & Physics
The Most Mysterious Star in the Galaxy
The object known unofficially as Tabby's Star dims every so often in a chaotic pattern—and nobody knows why
Stories by Bradley E. Schaefer
The Origin of the Greek Constellations
Astronomy and archaeology have together uncovered the history of how the star pictures came to be--and how people have used them over time
Gamma-Ray Bursters
Intense flashes of high-energy radiation appear unpredictably in the sky. Limited observational data have frustrated attempts to determine their cause, but likely mechanisms have been proposed...
