Which one among the following statements is not correct ?

Statement C is incorrect because Sir Isaac Newton was an English mathematician and physicist (1642–1727), not Greek. The first Greek astronomer to propose a heliocentric (Sun-centred) model of the universe was Aristarchus of Samos in the 3^rd century BCE.

• Option A: Johannes Kepler's First Law of Planetary Motion established that planets move in elliptical orbits with the Sun at one focus.
• Option B: Eratosthenes (c. 276–194 BCE) is credited with the first scientific calculation of the Earth's circumference using the sun's angle at Alexandria and Syene.
• Option D: The Almagest is a 2^nd-century CE mathematical and astronomical treatise written by Claudius Ptolemy, which remained the standard astronomical text for over a thousand years.