Though they spent the bulk of every Apollo mission mated as one spacecraft, the Apollo command-service module was actually two separate vehicles, only one of which came home.

As 'Apollo 13' turns 30, we talk to legendary NASA flight director Gerry Griffin who helped make the film as realistic as ...

When an explosion rocked Apollo 13's service module on April 13, 1970, the vehicle's vital role, and that of the attached command module spacecraft, suddenly became crystal clear. The astronauts ...

The command module performed so well that NASA felt confident in making a bold move — sending Apollo 8 all the way around the moon in December. Apollo 9 was an Earth-orbit test of the lunar module.

It was the only part of the Apollo 11 spacecraft that came back from the moon. Designing, testing and building it was a monumental task, according to two engineers who were part of the effort.

The Apollo Command/Service Module (CSM) was conceived as the mothership — the spacecraft that would keep the crew alive throughout the lunar mission all the way to splashdown.

It was the only part of the Apollo 11 spacecraft that came back from the moon. Designing, testing and building it was a monumental task, according to two engineers who were part of the effort.

The command module performed so well that NASA felt confident in making a bold move — sending Apollo 8 all the way around the moon in December. Apollo 9 was an Earth-orbit test of the lunar module.

The command module performed so well that NASA felt confident in making a bold move — sending Apollo 8 all the way around the moon in December. Apollo 9 was an Earth-orbit test of the lunar module.

It was the only part of the Apollo 11 spacecraft that came back from the moon. Designing, testing and building it was a monumental task, according to two engineers who were part of the effort.