You can probably imagine an early universe without planets or stars — but what did the universe look like before time existed? This fall, you could find out by taking a free class led by prominent ...

Astronomy professor Chris Impey's MOOC, or Massive Online Open Course, has already signed up more than 1,000 students and it recently got a shout-out from Sports Illustrated, which listed "free online ...

(OK so I'll post this but then I really really have to get back to work!) I just got a note from the American Astronomical Society that many of the big lectures at the meeting in January 2008 were ...

I just got a note from the American Astronomical Society that many of the big lectures at the meeting in January 2008 were recorded, and are available online. Some are audio and some are video. This ...