Infinity is a mathematical concept; it can't exist in the real world (unless the non-observable universe is infinite). This is why physicists have trouble understanding what happens in a black hole, because their calculations always have infinities in them which isn't good in a finite universe.
Of course in mathematics you have two types of infinity, countable and non-countable. The set of all integers between 0 and positive infinity is countably infinite in size, same as the set of all integers between 0 and negative infinity. The set of all real numbers between 0 and 1 is non-countably infinite.
Of course in mathematics you have two types of infinity, countable and non-countable. The set of all integers between 0 and positive infinity is countably infinite in size, same as the set of all integers between 0 and negative infinity. The set of all real numbers between 0 and 1 is non-countably infinite.
