How big is the Universe?

As a kid I often used to lie in bed at night trying to picture the immensity of the universe. Usually once I hit the level of Jupiter my mind would panic and I’d have to start over.

I found this really cool visual representation of it today, that has less of a panic inducing effect. It’s quite interesting to have a play with it.
Copyright 2012. Magnifying the Universe by Number Sleuth.