Many of us old-timers are enduring a fantastic amount of change these days — music, dress codes, Bible study methods, vocal ...

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 ...

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.

Kepler's Supernova, seen in 1604, is one of the most famous exploding stars ever seen, and now astronomers think it may have ...

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 ...

By the 17th century, famed engineer and astronomer Galileo Galilei refined Copernicus ... It was not until Johannes Kepler introduced the concept of elliptical orbits that scientists could ...