Not sure what you are talking about. The SLS is in active development at the moment. An unmanned Orion capsule is planned to orbit the moon in November 2018, followed by manned missions 3 years after that: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Space_Launch_System" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Space_Launch_System</a>