The early-17th-century astronomer Johannes Kepler defined the basic rules governing planetary motion. The basis for everything we understand about the orbits of the planets comes from the work of ...

This diagram offers a hint at one of those ideas ... Kepler’s Platonic Solid Model of the Universe Johannes Kepler (1571-1630) was a true successor of Copernicus’ and his first astronomical ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. 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.

Using modern techniques, researchers have re-examined Johannes Kepler's half-forgotten sunspot drawings and revealed previously hidden information about the solar cycles before the grand solar ...

Kepler's sun drawings are the oldest sunspot records with known dates. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. "Half-forgotten ...

Poor Johannes Kepler. One of the greatest astronomers ever, the man who figured out the laws of planetary motion, a genius, scholar and mathematician — in 1611, he needed a wife. The previous ...

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 ...

In 1609 Johannes Kepler wrote a curious tale about a trip ... In mathematics, figures are numbers and geometric forms. Figures are also diagrams in scientific texts. In the Middle Ages, what ...

A booklet of just 24 pages, it was written in 1611 by his friend Johannes Kepler, court mathematician to the Holy Roman Emperor Rudolf II in Prague. In De nive sexangula (On the Six-Cornered ...

Based on Kepler's observation, researchers suggested the cycle-boundary range between Solar Cycles −14 and −13 as indicated in red lines, in comparison with the sunspot (group) number ...