Galileo's contemporary Johannes Kepler, a German mathematician, discovered a way to get beyond the magnification ceiling. Instead of a concave lens near the eye, Kepler used a convex lens.

In 1611, Johannes Kepler improved on Galileo's design by making one simple change. He replaced the concave lens with a second convex one. As a result, the light rays converge as they exit the ...

Further discoveries by Johannes Kepler (1571-1630 ... the major thinkers of the Scientific Revolution (Copernicus, Kepler, Galileo, Newton, Descartes) had revealed a universe which seemed like ...