The Big Bang is "not proven fact; it is opinion," Mr. Deutsch wrote, adding, "It is not NASA's place, nor should it be to make a declaration such as this about the existence of the universe that discounts intelligent design by a creator."
It continued: "This is more than a science issue, it is a religious issue."
Don't get me wrong, I am aware that the Big Bang theory may prove to be false, for instance with a revival of the steady state theory or something else I haven't thought of yet. Deutsch isn't saying 'science will continue to evolve but this is the best we have so far' he's saying, quite explicitly, that physics is only opinion, and that creationism is just as valid as current physics for the US's flagship space flight agency. Can you believe it, because I almost literally can not.
ETA I think for me the worst part is the lazy thinking that equates 'theory' with 'just some guy's opinion' and there's no excuse for it, but you see it everywhere. I know people can't help being stupid but wilful stupidity by people who could think if they tried drives me nuts.