<p>Russian cosmonaut Fyodor Yurchikhin and US astronaut Jack Fisher arrived at the launch pad at the Baikonur Cosmodrome in southern Kazakhstan Thursday, April 20.</p><p>The pair, who form the Expedition 51, were set to board the Soyuz MS-04 spacecraft aboard a Soyuz-FG carrier rocket, which was scheduled to launch from Baikonur around 7:13 GMT, NASA</a> reported. The rocket was expected to dock to the International Space Station around six hours after the launch.</p><br />
