This universe - our universe - is 13.8 billion years old. And it is massive. It is so massive that the human brain which is programmed to deal with everyday objects cannot even hope to imagine how big it is. It is so big that no matter how long we live, no matter how advanced our technologies, we will never be able to see more than a very very tiny fraction of the universe. Our sun, our own star that is the source of all life - while being huge and important to us, is insignificantly tiny compared to the aforementioned size of the universe. The sun is in what we could call the outskirts of the milky way galaxy, in the edge of a spiral arm, orbiting a supermassive blackhole along with what we could only assume as billions of more stars, bigger and brighter than our sun. And there are billions of more galaxies, each having its own horde of a hundred billion suns. Our sun isn’t special. But it is old. Being a second (or possibly third) generation star, the sun is 4.6 billion years old, g...