Very, very big.
Very,very old.
(That's just a rough guess, but I reckon it's pretty close.)
The observable Universe is about 28 billion LY accross. The Universe itself is believed to be about 92 billion LY "accross." I put it in quotes because the Universe is believed to be finite but unbounded. There is no edge or outside the Universe. 92 billion LY being how far you can travel in a straight line before you find yourself back in the vicinity of where you started. This by the way is just the best best guess now, it is by no means established fact and there are other theories about the size and the shape of the Universe.
No - the Universe is infinite in age and size. The "known universe" has limits.
@DaveRampey I stand corrected, didn't read far enough, and the answer has changed in recent. Yes, current thinking is the Universe may well be infinite. [space.com]
The known or observable Universe is everything that we can see as a result of the big bang, approximately 15 billion years old, the size is approx. 91 billion light years in diameter.
However the actual Universe had no beginning, and it extends forever in every direction.
The known Universe is expanding - The Universe is not expanding - by definition it can not.
13 meters across, and 12 years. However the meter we use on Earth isn't the actual meter, and the year is based on the rotation of the universe, not any particular solar system. Hope that helped.
Really big and super old. Want more details?
Age about 13 1/2 billion years, size no one knows. but its big lol
and expanding..............