The Kepler telescope, which has provided so much information on planetary bodies outside our solar system, was not idly named. Johannes Kepler, who the telescope was named for, was a German astronomer ...

Before Johannes Kepler’s Third Law, the motions of the planets around the Sun were a mystery. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Johannes Kepler, a 16th-century German astronomer, formulated three laws of planetary motion based on Tycho Brahe's observational data. Kepler's First Law states that planetary orbits are elliptical, ...

The early-17th-century astronomer Johannes Kepler defined the basic rules governing planetary motion. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

The planets of our solar system move in ellipses. We've known this, so we are told, ever since Johannes Kepler devised his laws of planetary motion in the early 1600s. While it's true that orbits are ...

Of all the patriarchs of science, Johannes Kepler is the least known. We often talk of Isaac Newton and his law of universal gravity (and laws of motion, and the calculus, and laws of optics), of ...