Why is there so much wasted space aboard the alien ships?

Hyperdyne Systems 120/A2
MemberOvomorphJune 19, 2012673 Views9 RepliesWhy is such a huge amount of space wasted aboard the derelict?
Ridley always reckoned it was a warship with a payload of bioweapons. Fair enough, but why did it need them spaced out a metre apart in a room with a 30-metre high ceiling that was otherwise empty?