a question

You can only get VERY close to 0

Here is an example...

(1/99)^80 = a  very very small number, but still > 0

No, the closest you can get is 1

Ex: 5²=25 5¹=5 5⁰=1
the n⁰=1 rule is true for all real numbers

X^0=1  where x is real and not equal to 0.

0^0 is undefined

This is valid:

0^x = 0 | for any x > 0