Jeff Williams and T.J. Creamer spoke with soldiers Tuesday for 20 minutes via a satellite link from 220 miles above the Earth.
"There's not a day goes by when we don't remember the service and the
sacrifice that so many of you are making over there," Williams said, bobbing in weightlessness alongside Creamer.
Williams and Creamer, both Army colonels, had requested the video and audio link with U.S. soldiers serving in Iraq, NASA officials said.
One soldier asked if the broken urine processing system aboard the space station had been fixed. The astronauts said no and that urine was being collected and stored until the system could be repaired.
Video of the conversation can be seen at www.nasa.gov.
Joan Rivers refuses to apologize for kidnapping joke
Avril Lavigne denies racism in 'Hello Kitty' music video