What is GLAST?

GLAST is due to launch on June 5 (it was moved back a couple of days since I last mentioned it), and so you can expect to start seeing more news about it. In fact, some videos have surfaced talking about GLAST, explaining gamma rays and why we want to observe them... and one of the vids has a familiar face in it. The first is GLASTCast, a short video series about the gamma-ray observatory produced by NASA. Here's a link to the first one, but I think I'll embed the second one here for reasons that'll be obvious right away... It's pretty cool to see so many old friends in the video. This series has a great look, and I hope they keep making them. You can get higher-res versions on the GLASTCast page. But if you prefer things on the lighter side, then check out this French-made video ...