the_art_of_physics

What is so special about  Gravity? Does know about gravity explains everything in the universe?  I  ain't going to explain to you the textbook description as it is boring and absurd. So, the special things about gravity are; it is somewhat strong and somewhat weak (Gravity is strong on Earth in comparison to on Moon, you might have heard or read that people float on Moon. I won't be giving you an example of Blackhole unless I explained you.) Newton's Idea of Gravity: He described gravity as a force of attraction between two objects as we are attached to Earth. He says if we know Speed and time, we can predict the future positions of any particle or object. So, his theory explains the motion of Earth, but later they found Uranus. Scientist recorded some deviation in the trajectory of Uranus around the Sun. So, here Newton's laws were failing, but they thought Newton could not be wrong. They recalculate the Uranus orbit by assuming a planet X which balance Newton's Gr...