What is Relativity?

Albert Einstein was famous for many things, but his greatest brainchild is the theory of relativity. It forever changed our understanding of space and time.

What is relativity? Succinctly put, it is the notion that the laws of physicsare the same everywhere. We here on Earth obey the same laws of light and gravity as someone in a far off corner of the universe.
The universality of physics means that history is provincial. Different viewers will see the timing and spacing of events differently. What for us is a million years may just be a blink of an eye for someone flying in a high speed rocket or falling into a black hole.