Now I’m simple. I have a lay-mans knowledge of Physics up to Sir Isaac Newton three laws etc. For example I understand the effects of horizontal and vertical gravity.
In relation to relativity, I understand that if I am looking at a man on the moon via a telescope, i am looking at him relating to time, in the past. For example, if I look at myself in the mirror, a foot from the mirror, I am looking at an image of myself 1 nano second into the past.
Energy is equal to mass by the speed of light squared.
Am I right in saying that these are the things you take into account when you are trying to understand this concept, the title?