Only three Apollo missions had been launched previously. Apollo 7 in 1968 was the first, with a goal of testing the command and service modules (CSM) in Earth orbit. Launched the same year, Apollo 8 was the first manned test of the mighty Saturn V, the most powerful rocket to ever fly (Apollo 7 had used the smaller Saturn 1B rocket). Apollo 8 also propelled the first humans to the moon. An orbital mission only, it was not equipped with a landing vehicle. In 1969 Apollo 9 lifted the first lunar module (LM), an ungainly looking four-legged two-stage spacecraft designed to land astronauts on the moon, into Earth orbit. The LM was put through its paces setting the stage for Apollo 10.