Maybe I’m misinformed about this. But I was always told matter cannot be destroyed or created. But I have been told space is constantly expanding. Is this expansion of space not made up of “matter”? Where does it come from?
In: 282
Think of space expanding like blowing up a balloon. The balloon gets bigger as it keeps inflating. If you were to draw two dots on the surface of the balloon, no matter where you draw them, they will get further apart from each other as the balloon expands. That’s how space is expanding. Everything is getting further away from everything else, all the time.
At a small scale, gravity pulls it all back together, but at a larger scale the expansion of space means that every galaxy, every star, is rushing away from every other galaxy and every other star all the time. Eventually, trillions of years from now, expansion will make objects in space so far apart that we won’t even be able to see anything outside of our local area.
Latest Answers