Rise of reusable rockets signals a new age of spaceflight
Successful landings by SpaceX, Blue Origin raise the prospect of cheaper, more efficient rockets
![SpaceX Falcon 9 rocket on a barge](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/12/122416_scivis_main-recrop.jpg?fit=860%2C490&ssl=1)
ROCKETS RISING On August 14, aerospace company SpaceX landed a section of its Falcon 9 rocket on a sea barge in the Atlantic. The event marked the fourth such sea success, along with two ground landings.
SpaceX