Does the Observable Universe Expand?

Not only is the universe expanding; its growth has been speeding up. ... Richard Gott of Princeton performed a detailed calculation of the radius of the observable universe. Their answer was 45.7 billion light-years—more than three times bigger than our first, naïve estimate!

Is the observable universe getting bigger or smaller?

Since the universe has been expanding for 13.8 billion years, the comoving distance (radius) is now about 46.6 billion light-years.

How much bigger is the universe than the observable universe?

They found that the universe is at least 250 times larger than the observable universe, or at least 7 trillion light-years across.