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 ...

It was 400 years ago that Galileo Galilei opened the window to the skies with a telescope In 1609 Johannes Kepler published his Astronomia Nova and in the proces s provided us with a new ...

However, Galileo's trials and theories inspired others like Sir Isaac Newton and Johannes Kepler to prove that the Earth was not the center of the universe. Some years ago, the Pope accepted that ...