Physicist I am a physicist and it comes naturally to me that all planets are spheres mainly because of gravity. The gravity of a planet is directly proportional to the planet’s mass and inversely proportional to the planet’s radius. Gravity can be calculated 6.67*10^-11(planet mass/planet radius^2). This also means that, according to Newton, the earth’s rotation does not have a … Continue reading A message from a physicist and a message from a flat earther