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General relativity states that gravity is neither a force nor a gravitational field, but an illusion. Einstein once said that the happiest thought he had was imagining a man falling from a roof. While this might seem like a happy experience, he realized that as the man fell, he would feel no weight. In other words, he would be in a state of weightlessness, with everything falling with him. This feeling is comparable to floating in space, away from any large mass, including inside a space rocket moving at a constant speed. Inside a rocket, you can feel weightlessness, even though the rocket is moving at a certain speed. We can define the tiny motions occurring inside the rocket as "inertial observers" everywhere. All inertial observers experience no acceleration and are not subject to any gravitational field. In this state, the laws of physics are the same. This means that inside the rocket, you cannot distinguish between the same and different conditions as the first man falling. "Matter tells spacetime how to curve, and at the same time, spacetime tells matter how to move." - John Wheeler "Matter tells spacetime how to curve; spacetime tells matter how to move." - John Wheeler Read more in the article: Why Gravity Is Not a Force, But an Illusion: https://www.sciways.co/why-is-gravity... If you like the channel's approach, you can support or donate: 1) Subscribe to the channel    / @sciways   2) True Wallet, PromptPay, or LINE PAY https://tipme.in.th/sciwayslife 3) Accept donations via PayPal https://streamlabs.com/sciways1/tip ___________________________________ [For more information] For more information, visit: Facebook Page:   / science21s   Website: https://www.sciways.co/ Blogger: https://sciways.blogspot.com/ Blockdit: https://www.blockdit.com/sciways Medium:   / sciways   YouTube:    / sciways   ___________________________________ [Video Contents] ___________________________________ [Music] Interstellar Mood by Nico Staf [References] Why Gravity is NOT a Force -    • What Everyone Gets Wrong About Gravity   #GeneralTheoryOfRelativity #Gravity #Spacetime