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Astronomycast episode 245 from Monday, December 26, 2011, calendars.

Welcome to astronomycast, our weekly facts-based journey through the cosmos

where we help you understand not only what we know, but how we know what we know.

My name is Fraser Cain, I'm the publisher of university today,

and with me is Dr. Pamela Gay, a professor at Southern Illinois University at what's filled.

Hey Pamela, how you doing?

I'm doing well. How are you doing, Fraser?

Good. You're nicely rested from your exotic cruise.

I'm not sure I'd say rested. The thing about vacations is there's so much to do

that you just come back a different form of tired.

I think your body is just so used to travel that it can't tell the difference

between holidays and going to some astronomy conference.

...