Fine Structure

Photon Dimming == Dark Energy?

Nature has an interesting article about a potential source of Dark Energy in the universe (free access here for a short time) whereas photons over long distances can turn into "chameleon" particles in the presence of magnetic fields. In the process, these particles loose some mass and appear more dim then they would normally.

The real link here is a short discussion on the paper from Zapperz which is very readable and interesting! ]