It'll cost several billion dollars more than originally planned to get NASA's huge
Space Launch System (SLS) rocket off the ground, and that already-delayed first flight will probably end up being pushed back yet again, a new report by the agency's Office of Inspector General (OIG) finds.
NASA is counting on the two-stage SLS to launch astronauts toward deep-space destinations such as
the moon and Mars. The giant rocket will also aid planetary exploration, helping robotic spacecraft reach distant targets in much less time than has hitherto been possible, agency officials have said.
Aerospace titan Boeing is responsible for the SLS' first, or core, stage. In 2012, NASA contracted with Boeing to build two SLS first stages, as well as one Exploration Upper Stage (EUS), an advanced second stage that will boost the rocket's payload-lofting capability.
The space agency originally aimed to launch the first SLS flight — an uncrewed test called Exploration Mission 1 (EM-1), which will send NASA's also-in-development
Orion crew capsule around the moon — in December 2017. The first crewed SLS-Orion flight, EM-2, was targeted for mid-2021.
Those schedules have slipped, however: NASA now aims to
launch EM-1 in mid-2020 and EM-2 in the middle of 2022. And there will be cost overruns as well. The "Boeing Stages" contract runs through 2021, but NASA forecasts that the company will spend all of the allocated money by early next year, without the final delivery of a core stage or the EUS.