What is the Size of the Universe

When I first made the Hubble Deep Field: The Most Important Image Ever Taken video, there has been a consistent avalanche of comments stating that there is no way the universe can be this large. Figuring out the size of the universe isn t as simple as just multiplying the distance light travels in one year by the age of the universe. We need to account for the expansion. Astronomers have recently estimated a lower limit to the size of the universe to be roughly 78 billion light years in