Understanding Your Position in the Universe
Understanding Your Position in the Universe ==================================== ======= Look around you. Where are you? Where is this place you are occupying? Somewhere in a room, maybe in a city on a continent on a planet orbiting a star in a galaxy among billions. But… where is all of that? While this may feel like a daft question, it turns out that the concept of an absolute position is something humans made up. The Universe: A Bag of Space ---------------------------- In a nutshell, the universe is a big bag of space that has things in it. If someone removed all these things, the stars and planets and black holes and dust, there would just be empty space left. In empty space, the concept of having a position loses all meaning. Empty space is uniform, the same everywhere. The space we occupy is not like a stage under our feet. We can't mark specific points, or staple something to spacetime as an anchor. Without things, there is no position. We are really ever only at a position...
