Johannes Kepler was a scientist and a mathematician from Germany. He made many very important discoveries for astronomy. These included the laws of planetary motion and some improvements to the telescope.
Here’s a fun video about Kepler!
Childhood and Education
Marriages and End of Life
In 1597, Kepler married a woman named Barbara Müller. They had two children who sadly died as infants. Later, they had three more children. They were Susanna, Friedrich, and Ludwig. Unfortunately, Kepler’s wife, Barbara, died in 1611.
In 1630, Kepler got sick and then died in Regensburg, Germany. He was buried in Regensburg. Kepler left an important legacy in astronomy and is a famous scientist to this day.
What Did Kepler Discover?
Laws of Planetary Motion
First Law (Law of Ellipses): Planets orbit the Sun in an elliptical orbit.
Second Law (Law of Equal Areas): A line segment connecting a planet and the Sun will carve out equal areas in equal time.
Third Law (Law of Harmonies): The period of a planet squared is proportional to the semimajor axis of its orbit cubed.
Contributions to Heliocentrism
In 1543, Nicholas Copernicus published his heliocentric theory. This theory stated that the Sun was the center of the Solar System, not the Earth. Many people did not like this theory, especially the Catholic Church.
Today, we can prove that heliocentrism is correct and that the Sun really is the center of the Solar System.
Kepler heard about this new invention and began to think of improvements. in 1611, he created a new telescope that had a convex, instead of concave, lens. This telescope worked much better than earlier ones.
Other Great Resources
Additional Facts about Kepler: https://kids.kiddle.co/Johannes_Kepler
Brief Overview of Kepler as a Scientist: http://www.sciencekids.co.nz/sciencefacts/scientists/johanneskepler.html
Kepler and His Time Period: https://www.famousscientists.org/johannes-kepler/