QUANTIME

If a human on Earth (or through the Hubble telescope, because of its relatively low orbit) gazes into space, he looks into the past. A glance at the Sun shows it as it was eight minutes ago. On the edge of the observable universe, one sees object who have been there at least 13.8 billion years ago. Observing far away objects is not time traveling. If it were, that would mean that our line of sight would be a moving object. We only collect light that reached us from that distance and so this light (and other wavelengths of electromagnetic emissions) is what travelled the distance. If we want to observe a far object as it really is, we will have to go there. Let us imagine that we go on board a space vessel which can reach nearly the speed of light, let’s say 99,99%  c  (for further ease of use:  c -  [c superscript minus]). This is a thought experiment because: Motion at nearly light speed is impossible according to Einstein’s theories and: As no sc...