Innocent question (ie, no hidden agenda): The SLS is reported as being 33% overbudget.
So, how is the SLS fundamentally different from, say, SpaceX's BFR? Or did the BFR cost about the same as the SLS?
So, how is the SLS fundamentally different from, say, SpaceX's BFR? Or did the BFR cost about the same as the SLS?