> Photons have no "mass" [tm]. (You know the rest). > Photons travel at "the speed of light" [tm]. > For photons existence is timeless & "spaceless" Okay. One photon from the moon traveling towards you. Another one from the nearest galaxy traveling towards you. Which one reaches you first ? Timeless ? Really ? --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .