Yeah, I gotta believe this is a spoof of the scam letters.
Otherwise, I tell you what, forget NASA, get yourself into the Nigerian Space Program-they pay GOOD! 20 million US dollars accumulated in flight pay and interest? And anyway, he hasn't made any of his flights since he was stranded up there, right?
The scary thing is, there are dumb asses who will fall for this, just as they fall for the more believable oil-profit-skimming-civil servant stories.