Yes, it is official. There is podcast in the space. The National Aeronautics and Space Administration (NASA) agency has published a mp3 recording of Steve Robinson, Mission Specialist on the Space Shuttle Discovery. Podcasting is making audio files available online in a way that allows software to automatically download the files for listening at the user's convenience.
"Hello, this is Mission Specialist Number 2 Steve Robinson from the Space Shuttle Discovery. We're high in orbit on our last day of orbit. Tomorrow we come home. I'm currently talking to you just off the southeast tip of Indonesia in the daylight and moving on towards night. It's been a fantastic mission up here, absolutely amazing. Some of the hardest work that any of us have ever done. We haven't had a whole lot of sleep, and we've been extremely busy and really happy."
"We've had some surprises. We sure didn't expect that big piece of foam to come off of the tank. Fortunately it missed us. We didn't expect to go outside and get to remove gap fillers from the belly of the orbiter. That was, I would have to say, the most fantastic experience of my life. Just incredible to be way out there on the end of that arm all by myself and see no evidence of humans anywhere. Just me and the Space Station and the Space Shuttle from a view that neither I nor anybody else has ever seen, and watch the sun come up over the bottom of the Space Shuttle, and get to sort of drink in that big view. I'll never forget it, and I'll never be able to describe it adequately, I'm sure. But I feel very fortunate to have been able to get a chance to do that. And also very glad that it worked!"
The podcast is available as a single mp3 file, and there is no information about its frequency, although Steve finishes the recording with "hope to talk to you soon".
Currently the NASA is not offering a RSS feed with enclosures for the podcast, so users must download the file directly from the host page. There is a transcript also available on that page.