Science Forums 2

[jedaisoul]

Originally Posted by LJP07

Just a quick question bout the "beginning of the expanding universe", a lot claim that it came from nothing or whatever. But can nothing have properties, for example, a perfect vacuum...can this have essentially nothing? I think not because I remember learning about particles that appear from nothing and collapse into each other to form nothing.

So do you need a "Universe" for this to exist, would these particles just not always be there...regardless of how many Universes you have or any other current theory regarding the Universe?

I have not got an answer to your query, but I would like to clear up some misconceptions which you may have:

• Nothing cannot exist. There is no difference betweeen nothing and non-existence. To exist, a thing has to be something.
• A perfect vacuum is not nothing. It has metric properties, so is something. E.g. Imagine an empty box, with absolutely nothing inside it except empty space. Now take away the box, the empty space is still there. Hence a perfect vacuum (if it were possible) would exist.
• There can only ever be one universe. Universe means everything that exists. This confusion arises because, if there is only one space-time continuum, it is the universe. But as soon as you posit the existence of more than one space-time continuum, the universe is the sum of all space-time continua.

I hope that helps...