Isn't It Time to Buy Shares in That Universe?

If dark energy is constant, the universe will be a bunch of black holes isolated from each other. Each one will be past the other's cosmic horizons. You don't want to buy shares in that universe? Unless shares are for flashlights,. Then yeah, those are going to become very, very valuable in the future. There's this fun idea that dark energy will convert into something called phantom energy. This is energy which will grow even more rapidly than just the expansion of space. So as space expands, the fraction of energy in each chunk of space also goes up.