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What is gravity?
Gravity is an invisible force by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another.
It is produced by the celestial bodies. It is an attractive force that is denoted by 'g'.
Earth's gravity comes from all its mass. Gravity also gets weaker or stronger with distance.
So, when the objects are closer to each other, the stronger will be their gravitational pull, and when the objects are distant to each other, their gravitational pull will be weaker.
It is measured by the acceleration that is exerted to freely falling objects.
At Earth’s surface, the acceleration of gravity is about 9.8 meters/second (32 feet) per second.
Without gravity, no life exists. It is the gravity of earth that keeps us & things on the ground
For example, The Sun & The Earth moves in its orbit and it is because of gravity on earth, the gasses such as oxygen, nitrogen, etc reside on the earth’s surface.
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