What exactly causes gravity?
What is the cause of earth's gravity?
Is gravity of the earth constant? Why does gravity act downwards? Why is everything attracted towards the center of the Earth? What prevents the Earth from collapsing under its own gravity? What is the value of acceleration due to gravity at the centre of earth? Why? And also what about gravity? Is the gravitational force of earth increasing? Why do we take gravity as a constant? Is there no gravity inside the Earth? Is there no gravity inside the earth? Why is gravity zero at the center of the earth? How does gravity work, and is gravity a matter or something else? Is there any relationship between earth's natural magnetism and earth's gravity? What is centre of gravity does its changes? In what way mass affects gravity? Does mass have an affect on gravity? Does gravity affect energy? Why in the whole universe gravity causes centripetal force? How is the gravity work? What would happen if Earth’s gravity were to double? What is a gravity well? What would happen if the gravitational force of earth increased suddenly? Do we have 100% proof that gravity is caused by the bending of space by matter, or is this just a hypothesis which satisfies observations? Why is gravity constant? How can gravity affect energy? How is zero gravity created on earth? Is energy the source of gravity? How does the gravitational force cause the bending of space? What are some of the applications of specific gravity? What are the advantages and disadvantages of gravity? Is gravity and forces energy or caused/created by it? What happen when earth losses its gravity and speed at same time?