Links for Tuesday

The latest t-shirt design features Annie Jump Cannon and her famous spectral classification of stars.

I suspect this week will be light on posts. I am feeling a bit desperate about my lack of paid work, so I will be concentrating on sending out applications today. On Thursday I will be in Washington, DC for a Tweetup at NASA Headquarters, which I am very much looking forward to. So, here are some other interesting and important links for you to peruse.

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