an open window

i feel it too much to ask what brought this here, how long it will last, and what will become of it. i am merely happy for it at the moment. this is what i tell myself, but i ask all those guilty questions, particularly the last of the three. the Cretaceous was a very long geological period, and it had the most interesting dinosaurs. it is a similar situation with galactic evolution. hydrogen burning stars of the right size can only exist at certain times in the grand scheme of things, and long after they are all burned out, and for all those billions of years we had to wait for them, space was lifeless. how long? what will become if it?