When we look at the dark sky we actually see the past
Space and time are two inseparable parts of the universe, like two different threads that make up the same fabric. Before Einstein gave us the special theory of relativity, both were supposed to be absolute and unchangeable. Edwin Hubble, on the other hand, proved that the universe came into being with a big explosion when he detected the movement of galaxies while observing the universe.
When we look at the dark sky we actually see the past Read More