I would like to know if an infitesimal unit of time is relative or absolute. If a supernova sweeps away the Pillars in the Eagle Nebula, would it be correct to imagine that as I type this the gas/dust is being displaced or otherwise altered at the exact same instant even though images obviously wont be visible for thousands of years? Is the "now" in the Eagle Nebula the same as the "now" here on Earth? For that matter is "now" the same all over the universe? Is it possible to imagine the whole universe existing at an instant? What if I imagined I were able to view the galaxy as a whole in real-time instantly, in an image produced by some magic instantaneous photons? Is that question nonsensical? Is my "now" the same "now" experienced by some hypothetical aliens living on a planet near the center of an extremely large elliptical galaxy, billions of lightyears from the Milky Way? Or is it the same "now" experienced by someone travelling the speed of light?