Question

How big is the universe in meters?

Answer 1

The diameter of the universe is approximately `871 xx 10^24` meters.

Explanation:

Which is `871` yottameters or `871` septillion.

I actually calculated it about `870898760` exameters.

And it is still expanding at a rate of `74.3 +- 2.1` kilometers per second per megaparsec ( according to the data I've known earlier) and it's still accelerating.