On the surface, this looks marvellous: tiny projectors beam soothing images of lakes, mountains and tropical beaches onto the cabin walls by day, maybe starlight by night.

The intense heat raised the cabin pressure even more, to the point where the cabin walls ruptured.

During their training, the astronauts signed one of the cabin walls (pictured here).

This meant knocking down cabin walls and lowering the forecastle to create a flush deck, allowing greater utilization of deck space in engagements and storage of armaments.