They got out in space and climbed into the command module. The top of the crafts connected together in space. I wonder how it was possible though, because their suits were so big and it was enough...
The command service module , orbited the moon, in Apollo 11 it was Michael Collins, who did experiments, while the lunar module landed on the moon. With the two astronauts.
yes and no. yes, because the lander did return to the command module so the crew members could go home. no, because it split in half, so in a way yes, just not all of it.
The CSM stayed in orbit and the CMP (Command Module Pilot) performed science experiments and observation experiments while the LM and it's occupants were on the surface.