Is SLS worth the cost? NASA's new megarocket comes with a mega price tag
NASA's SLS rocket spent over a decade in development, and each of its launches of the Orion crew capsule is expected to cost about $4.1 billion.
TroibNews 
NASA's SLS rocket spent over a decade in development, and each of its launches of the Orion crew capsule is expected to cost about $4.1 billion.
