Comment by bfe

Just to clarify - Orion is a partially reusable spaceship, developed by NASA with Lockheed Martin as the prime contractor, while SLS is a non-reusable launch vehicle, developed by NASA with Boeing as the largest contractor. SLS has been a poster child for cost overruns and delays - but so far is still intended to launch the crewed missions to Gateway, while it was never intended to launch the non-crewed Gateway launches.