by a surprise
by a surprise
Johannes Kepler made the discovery of the planets' elliptical orbits in the early 17th century. He used observational data gathered by Tycho Brahe to formulate his three laws of planetary motion, which defined the precise shape and behavior of the orbits. This groundbreaking work laid the foundation for our modern understanding of planetary motion.
Careful and meticulous astronomical measurements by the astronomer Tycho Brahe followed by numerical analysis of that data by Johannes Kepler after Tycho's death.
Aristotle.
Are all orbits the same shape????
Most orbits are ellipses.
An elliptical shape.
The shape is an "ellipse".
The moon orbits the earth almost a complete circle.
circular
According to Kepler's laws of planetary motion, planetary orbits are in the shape of an ellipse with the Sun at one of the foci.
Planetary orbits are eliptical. Each orbit forms an elipse.