Space Station Crew Uses HAM Radio to Call Earth 

Inside the International Space Station, Expedition 25 commander Doug Wheelock gave a tour of the Russian segment of the orbiting complex, including the Soyuz spacecraft docked there. Wheelock showed off the station's HAM radio, using the call sign "NA1SS," to talk with people on the ground as the station flies overhead at 17,500 miles per hour. Wheelock, and Flight Engineers Shannon Walker and Fyodor Yurchickin all will return home to Earth this Thursday, Nov. 25.

Наука