There’s nothing more to find out, at least nothing that can’t be done with much cheaper unmanned missions  There are simply no good scientific reasons to send a manned flight to the moon. The desire to do so may have good justification in science fiction but not science fact [i] .  This research is simply not related to the reality of modern cosmology, it will tell us nothing about how the universe works or, frankly, anything we don’t even know already or could find out through unmanned missions.  The idea that there is serious research to be done is simply untrue. Cosmology is being conducted at the edge of the universe and the beginning of time. It’s not about collecting moon rocks.  [i] “Brave New World”, Editorial, Nature, 1 February 2007