top news story
Keck I
W. M. Keck Observatory

Universe's Lithium Problem A Bit Better

Studies of primitive stars suggest the universe has far too little of one form of lithium and far too much of another. But new work shows that the second problem might be nonexistent. > read more

observing
Comet ISON
Comet ISON Approaches
The “comet of the century” was stuck at 16th magnitude when it hid out for the summer. Still, good prospects remain for December. > read more
equipment info
Photo Gallery
Constellation of Scorpius
Photo Gallery
See the latest amateur astrophotos from visitors to our online photo gallery. > read more

 

SkyandTelescope.com's Free E-newsletters
Weekly Bulletin
   Our weekly astronomy and observing news roundup
AstroAlert
   Alerts for advanced amateur astronomers, as events warrant
the top five:
Sky Publishing, a New Track Media Company
Copyright © 2013 New Track Media. All rights reserved.
Sky & Telescope, Night Sky, and SkyandTelescope.com are registered trademarks of New Track Media