Gravity is still a confusing term to many physics aspirants . What is gravity? According to some sources gravity can be generally termed as an attractive force between two bodies. When we evaluate the case of earth the attractive force between the core of the earth with every object in its atmosphere is termed as earth's gravitational energy. The area upto which this force act is called earth's gravitational field. Many studies suggest that earth's gravity is due to the reaction happening at the core of the earth. Weak gravitational force is the weakest force discovered in the universe. If gravity is lost suddenly on a random day, the life on the earth wil become to a hault. Maybe the earth will be jeopardized.