This isn't knitting stuff and I am not an astronomy buff (hey, that rhymes), but I really enjoy seeing The Astronomy Picture of the Day each day. A brief explanation is written for each by professional astronomers.
Yesterday's photo is a fabulous Mauna Kea Milky Way panoramic view. Go to the linked site and you can use the scroll bar at the bottom of the screen to scroll right and left to see the whole view. Pause your cursor over the photo to view the names of the stars.
Here's the RSS feed for The Astronomy Picture of the Day in case any of you want to see it daily in your Bloglines or Google or Yahoo readers. And if you aren't using a reader, I highly recommend signing up for one. You can get your favorite news, blogs and even podcasts delivered daily. If you are on Ravelry, you can have your friends' updates such as new projects and things they have favorited go directly into your reader. So you only have to look in one place. Be warned, though. Your friends' faves can be a hefty amount of stuff to scroll through.
Having tried other readers, I am now using my Microsoft Outlook 2007 to read RSS feeds. Still living in Outlook.