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 it like a container of water that can magically expand or shrink. You decide to add a set amount of water into it. You also decide that you want the container to expand. While the container expands, it’s internal volume increases, while the amount of water in it remains the same. This is an extreme way to simplify the expansion of our universe. While the volume of matter our universe can contain increases, the amount of matter in it remains the same(it actually does not, the amount of matter in the universe can change over time due to the Information Paradox, Hawking Radiation and Black Holes). As to how it expands, there is an unknown force causing the universe not just to expand, but to also cause this expansion to speed up. Just how your car needs the chemical energy of fuel to accelerate, there is an energy accelerating the expansion of the universe. This unknown energy is called “dark energy” (“Dark”, because we so far have not been able to measure or detect this unknown force).
Latest Answers