Through his spyglass, in 1609 Galileo saw that there were spots on the Sun, imperfections on the Moon, and that the Milky Way was composed of millions of faint stars. His most stunning (and controversial!) discovery was of satellites orbiting Jupiter, dashing the concept that the Earth was the center of the Universe. (NASA)
-Neil degrasse Tyson
The Universe is Rated R for Cosmic Violence. Since the Big Bang the Universe has been a dynamic mix of exploding stars, colliding galaxies, black holes, dark matter, comets and asteroids- this cosmic violence is on such an immense scale that it makes our tiny planet seem like a distant spectator hoping not to be noticed by the war of the titans. But it will be noticed and has been in the past. There is a huge nuclear fire ball called the sun in our solar system that will become a red giant and the Andromeda galaxy heading towards our own galaxy.