The bridge will need to be anchored at the surface. The base should be made of steel, stones and wood blocks. 10 blocks of wood, 500 stone and 16 million steel bars to build the base. To reach the height in witch the elevator can be put into geostatic orbit it also will need 100 000 silk ropes made out of the highest quality of Q1000. Then an additional cow must be attached at the end of the rope and flung into space.
After the space bridge have been constructed additional space gear must be constructed to survive the hostile environments of space. A space suit must be constructed from ranger boots, leather pants, leather chest piece and a upside down demijohn.
To traverse the vastness of space, a space ship must be constructed.
Additional mansions can be built for extra space. Don't forget to bring enough branches or you might be stuck lost in space without fuel.
I believe this to be a great addition. We could explore the moon for unlimited cheese. Mine for troll on asteroids. But most importantly we could meet space animals like the pink platypus, frozen turkeys and the talking whale.