It consisted of a descent stage and an ascent stage.

The descent stage would have housed the majority of the fuel, power supplies, and breathing oxygen for the crew.

The lunar habitat consisted of three Spacehab modules and a descent stage.

The descent stage also acted as a launch pad for the ascent stage.

We'd crash with the descent stage if we tried it.

The left-behind descent stages are only about the size of a small truck.

The photos show the descent stage of the landers from each mission on the Moon's surface.

In particular this mode turns on the descent stage and cruise stage tank heaters.

At Mars, a radar on the descent stage will track the spacecraft's decreasing distance from the surface.

The lower section was the descent stage.