Here's a post from cosmologist Sean Carrol: "Energy is not conserved." http://blogs.discovermagazine.com/cosmicvariance/2010/02/22/energy-is-not-conserved/ htt

Here's a post from cosmologist Sean Carrol: "Energy is not conserved." http://blogs.discovermagazine.com/cosmicvariance/2010/02/22/energy-is-not-conserved/ http://blogs.discovermagazine.com/cosmicvariance/2010/02/22/... tldr: "Energy isn’t conserved; it changes because spacetime does."