astronomy
Johannes Kepler is the German astronomer who devised the three laws of planetary motion in the seventeenth century. These laws describe the motion of planets in elliptical orbits around the Sun.
An astronomer is a scientist who studies celestial objects such as planets and moons. They are not themselves planets or moons, but rather individuals who observe and analyze these objects as part of their work in the field of astronomy.
Johannes Kepler was the German astronomer who proved that the planets move in oval paths called ellipses. His work laid the foundation for the laws of planetary motion.
Carl Sagan is a popular astronomer, astrophysicist, cosmologist, author and science popularizer. He has spent most of his career as a professor for Cornell university where he directed the laboratory of Planetary Research.
Johannes Kepler, a German astronomer, discovered that planets follow elliptical orbits around the Sun, rather than perfect circles. This discovery is known as Kepler's first law of planetary motion and was a significant advancement in our understanding of the solar system.
They could either be a planetologist, a planetary scientist, or planetary astronomer.
Keplar.
Kepler
Johannes Kepler was the person who made the planetary model. He was a German astrologer, mathematician and astronomer. He was also a Mathematics teacher.
Johannes Kepler is the German astronomer who devised the three laws of planetary motion in the seventeenth century. These laws describe the motion of planets in elliptical orbits around the Sun.
Johannes Kepler discovered the 3 laws of planetary motion.
Being an astronomer.
The astronomer Johannes Kepler, most notable for his Laws of Planetary Motion. See the link.
Kepler
The rules summarizing planetary movements are called Kepler's Laws of Planetary Motion. These laws were formulated by the astronomer Johannes Kepler in the early 17th century and describe the orbits of planets around the Sun.
It was Johannes Kepler 1571-1630 who produced the Laws of Planetary Motion in 1618.
One does not have to be in a specific location to be an astronomer. However, travel may be required in order to conduct studies.