One of the highlights of President Obama's conversation with crew members of Space Shuttle Discovery was Commander Fincke's comment on the number of sunrises and sunsets they see each day. Here is the transcript provided by the White House:

THE PRESIDENT: Well, thank you so much for taking the time to speak with us. We've got a crew of wonderful schoolchildren here who are all interested in space, and we've got some members of Congress who are like big kids when it comes to talking to astronauts.

I'm told that you're cruising at about 17,000 miles per hour, so we're glad that you are using the hands-free phone. (Laughter.)

COMMANDER FINCKE: Mr. President, we go around the planet once every 90 minutes. It's quite a thrill, and it is very fast, and we see 16 sunrises and 16 sunsets every day.