An Apollo programmer once told me 2K is what they had to work with to get to the Moon and back. But hey, I do know how to strip a C "Hello World" program down to a 2K file... So, haven't we have progressed rather far in the last 45 years?

The energy emitted from stars is powering this expansion of space. Dark matter, may also be emitting dark energy and adding to this expansion. We don't understand gravity. The assumption is that it attracts on the universal scale, but this may be a misconception.