Beyond the visible universe, the invisible or the unobservable universe must be at least 23 trillion light years in diameter, and contain a volume of space that's over 15 million times as large as the volume we can observe. So that no signal can travel faster than light, hence there is a maximum distance beyond which nothing can be detected, as the signals could not have reached us yet.
The visible universe is observable universe and it's physical limit created by the speed of light itself. This means a sphere with a radius of 13.7 billion light years centered around the Earth, and we can only observe 13.7 billion light years of the universe. Because the electromagnetic radiation from these objects has had time to reach the Solar System and Earth since the beginning of the cosmological expansion. The visible universe contains 4.9% ordinary matter (baryonic), 26.8% Dark matter and 68.3% Dark energy. Only five percent (5%) of the universe is visible and its radius is 46.5 billion light years.
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