I produce educational video books.. My first publication was "How far away is it". It covers what we have learned from the Hubble Space Telescope. My second was "How small is it". It covers the microscopic to the Higgs Boson. My third was "How fast is it" on the speed of light and relativity theory. In all cases, I show how we came to our current understanding of the physical world rather than just saying what that reality is.