Gravity or gravitation is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light are brought towards one another. Isaac Newton was the first to discover gravity.
It is said that Newton came up with the concept of gravity when he saw an apple fall, just as he was thinking about the forces of nature. Whether this particular incident happened or not, Newton realised that some force must be acting on falling objects like apples, or else, they would not start moving from the rest. He also realised that the moon would move away from the earth in a straight-line tangent to its orbit, if some force was not pulling it towards our planet. Newton called this force “gravity” and determined that gravitational forces exist between all objects.
The new discovery cleared many of the long-standing doubts such as the reason why orbiting objects do not fly off into space.
However, Newton’s theory could only describe how objects attracted each other and not why they did. The answer to this was suitably explained by Einstein’s Theory of Relativity.
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