The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by
Galileo
Martin Luther
Johannes Kepler
Copernicus
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CDS-1 – 2017
– Galileo Galilei provided telescopic observations that supported the heliocentric model but did not discover elliptical orbits.
– Johannes Kepler, using the detailed astronomical data collected by Tycho Brahe, formulated his three laws of planetary motion between 1609 and 1619.
– Kepler’s First Law states that the orbit of a planet is an ellipse with the Sun at one of the two foci.