Hi! Today I was reading this article in SciAm on a model that some string theorists were working on that had to do with the cosmic origin; it talked about how strings, when compressed - when losing energy - will only decrease in length to the Planck length, and its energy level would rebound as...
If space-time looks like a piece of fabric (or an inflating balloon, in the inflation analogy) what is on the other side of the fabric?
Or does space-time not look like a piece of fabric at all...? Like some scientists are suggesting that it is a fluid...?
Hi, I'm a high school student and a new member, and upon reading I found something that's quite disturbing for me.
It seems that no one ever came up with a solution as to what happened before the Big Bang; I'm wondering, unless we bring in quantum fluctuations, do we have to assume that the...