>Really? Distatnt galaxies move away from each other at insane speeds. That seems like a plenty of kinetic energy to me... US 708 is going fast and it's still

>Really? Distatnt galaxies move away from each other at insane speeds. That seems like a plenty of kinetic energy to me... US 708 is going fast and it's still only 0.4 percent the speed of light. if you're talking about relative speeds between astronomical objects being very high due to cosmic expansion, i'm not well enough versed in the physics to know why or explain how, but the energy locked up in that movement doesn't seem as practical to talk about with regards to creating work. we know how to harness kinetic and thermal energy, as far as I know we're not yet able to surf the cosmic expansion, except inadvertently.