One of the things that has happened special in 2015 is the arrival of reusable rockets. Space X’s Elon Musk predicts that the reusable rocket will reduce the cost of accessing space by at least hundredfold. SpaceX and Blue Origin, both have succeeded in landing rocket back on earth, but in different zones.
On December 21, SpaceX has returned its 15-storey booster rocket upright and in intact form to a landing pad at a Cape Canaveral. It was big feat and one of the factors was a $60 million worth machinery was recovered.