... Rollout of a Soyuz TMA 2 Rocket . ... Credit: Scott Andrews, NASA Explanation: It takes a big rocket to go into space. Last weekend, this huge Russian rocket was launched toward Earth-orbiting International Space Station (ISS), carrying two astronauts who will make up the new Expedition 7 crew. Seen here during rollout at the Baikonur Cosmodrome , the rocket's white top is actually a Soyuz TMA-2 , the most recent version of the longest serving type of human spacecraft. ... Rocket Fuel . ...