Real scientists don't make assumptions by measuring the current data point 100,000 times and giving it equal weighting. Of course, when I went to school Earth Science wasn't a real science compared to biology, Chemistry and Physics. But as it turns out, it's all the "science" you morons could handle and was the only one you even attended. Here's my prediction, there's another ice age coming, and since stupidity has survival factor, you less idiotic descendents will be burning all the coal they can dig out of the ice. Please STFU.
At less than 10^-29 g/cc, I'm afraid the average energy density of the universe doesn't bode well for external fuel either. Lucky for us, Andromeda will be here soon enough. As I've stated before, the rest of the entire universe is rushing away from us as fast as it can. They just don't like us. We're pretty much stuck here.
FORTRAN is not a flower but a weed -- it is hardy, occasionally blooms, and grows in every computer. -- A.J. Perlis