<p>The spaceship, launched at 0318 GMT Monday from Kazakhstan's Baikonur Cosmodrome, is expected to reach the station in two days.</p>
<p>A Russian cosmonaut and an American astronaut are scheduled spend the next six months on the orbital outpost.</p>
<p>Commander Gennady Padalka, 45, and flight engineer Edward "Mike" Fincke, 37, will replace two colleagues who have lived aboard the complex since October.</p>