Baldseagull
Well-known member
Newton's Theory of Gravity is not "wrong". Einstein expanded it to cover things Newton didn't know about - the fundamental parts of Newton's Theory are still used because they are correct, and essentially identical to Einstein's when applied for 'everyday' use. Even Einstein's Theory breaks down in certain circumstances (black holes, etc), but it doesn't make the rest of it 'wrong'. If and when someone discovers a more accurate way to describe gravity (probably at a quantum level) then Einstein's theory may go the same way as Newton.
A Theory in science is the strongest possible term - nothing is ever described as 'fact'. 'Theory' does not mean guess - that's a hypothesis.
Newton's law of universal gravitation states that any two bodies attract each other with a force that is directly proportional to the sum of their masses, and inversely proportional to the square of the distance between them. Einstein demonstrated that this is not true, or "wrong". But as I said close enough not to matter most of the time. I know a theory is not a fact but it is possible to prove that a theory is incorrect, or "wrong".