What triggered the Big Bang
By Bruce Dorminey
Astronomers have a good idea of how the universe has evolved since cosmic genesis. But what, if anything, came before?
Comets: Keys to the solar system's past
By Michael F. AHearn
After four successful missions to study comets up close, astronomers find answers to the biggest questions about the solar system's origins.
How Antarctica unlocks cosmic secrets
By Liz Kruesi
The quest to understand our universe's earliest moments drives astronomers to Earth's coldest continent.
All about the Helix Nebula
By Raymond Shubinski
This planetary nebula offers more than a great view through the eyepiece. It shows astronomers how our Sun's life will end.
My time on the Hubble Space Telescope
By Jack B. Newton
Finding a rare type of supernova was just the beginning of this amateur astronomer's adventure.
10 great features for Moon watchers
By Michael E. Bakich
Our natural satellite offers plenty of targets you can spot through any size telescope.
Astronomy tests the Officina Stellare Hiper APO 130
By Mike D. Reynolds
This high-quality scope looks great, but does it produce equally terrific images?
Astronomy, 2011, October