There is some documentary evidence, but no surviving designs or physical evidence, that the principles of telescopes were known in the late 16th century.
Newton's law of gravity
Newton's law of universal gravitation states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
intro of hellocentric theory
Heliocentrism is the astronomical model in which the Earth and planets revolve around a stationary Sun at the center of the universe. The word comes from the Greek. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the center. The notion that the Earth revolves around the Sun had been proposed as early as the 3rd century BC by Aristarchus of Samos.
corruption is spiritual or moral impurity or deviation from an ideal. In economy, corruption is payment for services or material which the recipient is not due, under law. This may be called bribery, kickback, or, in the Middle East, baksheesh.