I haven't read any of the Einstein's theories. I am F.3 so please try to explain in a way that suits my age.
I heard that the universe is limited, which means limited space. Now let say there's a sphere of space which is the only space that exists. And then there are particles with the density of air which has an amount of heat energy. My question is, if there's no space outside of the sphere, does anything tend to get out of the sphere? For example radiation and the air particles themselves?
Some crazy question
2008-04-18 12:22 am
回答 (1)
2008-04-18 5:08 am
✔ 最佳答案
The universe is actually not static. It is a dynamic universe and is expanding rapidly. Matters and energy within the universe are both flying outward at tremendous speed.This is just like a balloon which is being blown up. The air inside the balloon is expanding outward.
Our universe, although has limited space, has no boundary. This is similar to the surface of a sphere, which has a limited area, but there is no boundary on it.
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