 Other exhibits in the revamped Astrocentre included a new 50 @-@ seat mini @-@ theatre , wall murals illustrating the phases of the moon , plus an increasing number of hands @-@ on exhibits and interactive computer @-@ driven displays . There were also displays of astronomical globes , an orrery and pictures of the planets , many taken by contemporary space probes . The Astrocentre also featured the world 's first commercial <unk> , a slowly rotating display containing a 3D representation of almost a thousand stars in our immediate stellar neighbourhood . 
