Although the equations cannot normally produce a "negative geometry", it is possible to do so by using "negative mass". Both general relativity and Newtonian gravity appear to predict that negative mass would produce a repulsive gravitational field. Subsequently, one may also ask, can you have negative gravity?
The force of gravity between two masses is always attractive. If force between two masses could be repulsive, this will be the case of negative gravity. This will need masses of a negative sign so that the force between a positive mass and a negative masse could be repulsive giving rise to negative gravity.
Furthermore, what is the opposite force of gravity? centripetal force
Also question is, is antigravity possible on Earth?
Aside from the long-running Anti Gravity column in Scientific American, however, there is no such thing as antigravity. Gravity is a force arising among any two masses in the universe.
Is artificial gravity possible without spinning?
In science fiction, artificial gravity (or cancellation of gravity) or "paragravity" is sometimes present in spacecraft that are neither rotating nor accelerating. At present, there is no confirmed technique that can simulate gravity other than actual mass or acceleration.
Related Question Answers
Is it possible to manipulate gravity?
The better news is that there is no science that says that gravity control is impossible. We are quite adept at controlling electromagnetic phenomena, so one can presume that such a connection might eventually lead to using our control of electromagnetism to control gravity. What is gravity made of?
They're the first direct evidence for the inflation or explosion that birthed our universe and the strongest evidence we've ever had that gravity is, in fact, made of tiny particles, called gravitons. Does antimatter have negative gravity?
Antimatter does not have negative mass. In our universe, there is no such thing as negative mass. Mass only comes in positive form. Second, the lack of negative mass means that gravitational fields can never be shielded, blocked, or canceled. What is a negative gravity anomaly?
A location with a positive anomaly exhibits more gravity than predicted by the model—suggesting the presence of a sub-surface positive mass anomaly, while a negative anomaly exhibits a lower value than predicted—suggestive of a sub-surface mass deficit. Who invented gravity?
Sir Isaac Newton
Who invented anti gravity?
Thomas Townsend Brown
Why do planets not collide with the sun?
Well, no, because its strong gravity would have caused the earth to be drawn into collision with it. What we call the earth would've just become part of Jupiter. Planets can't be in just any orbit, they have to be far enough apart so that they don't hit each other, and aren't drawn into collision by gravity. Does NASA have an anti gravity room?
Contrary to popular belief, NASA does not have "anti-gravity chambers" where people can float around like astronauts on the space station. But we do use several facilities to recreate the weightless, or microgravity, conditions of orbit. What is a zero gravity flight?
ZERO GRAVITY FLIGHT. The ZERO-G Experience® is an amazing opportunity to experience true weightlessness. ZERO-G's modified Boeing 727-200, G-FORCE ONE®, performs parabolic arcs to create a weightless environment allowing you to float, flip and soar as if you were in space. Why is there no gravity in space?
The second reason that gravity is not so obvious in space is because objects tend to orbit planets instead of hitting them. Orbiting just means that an object falls towards a planet due to gravity and continually misses it. Astronauts in orbit around the earth are not experiencing "no gravity". Is there a room with no gravity?
Fact or Fiction?: Antigravity Chambers Exist. Many people seem to think NASA has secret training rooms in which gravity can be turned off. Aside from the long-running Anti Gravity column in Scientific American, however, there is no such thing as antigravity. Which place on earth has no gravity?
Mount Nevado Huascarán in Peru has the lowest gravitational acceleration, at 9.7639 m/s2, while the highest is at the surface of the Arctic Ocean, at 9.8337 m/s2. “Nevado was a bit surprising because it is about 1000 kilometres south of the equator,” says Hirt. How gravity is created?
The answer is gravity: an invisible force that pulls objects toward each other. So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. How much does a zero gravity chair cost?
Zero gravity lawn chairs designed for outdoor use can range in price from $50 to $500, depending on the quality and certain features, like headrests or cupholders. What distance from Earth is zero gravity?
Near the surface of the Earth (sea level), gravity decreases with height such that linear extrapolation would give zero gravity at a height of one half of the Earth's radius - (9.8 m. s−2 per 3,200 km.) Is dark energy antigravity?
Dark energy is the name given to an unexplained force that is drawing galaxies away from each other, against the pull of gravity, at an accelerated pace. Dark energy is a bit like anti-gravity. Where gravity pulls things together at the more local level, dark energy tugs them apart on the grander scale. What is Newton's 3rd law called?
A force is a push or a pull that acts upon an object as a results of its interaction with another object. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. Is gravity a force?
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe. What is an example of opposing gravity?
For example, when you push a cart, the cart pushes back against you; when you pull on a rope, the rope pulls back against you; and when gravity pulls you down against the ground, the ground pushes up against your feet. What happens with every action?
Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. How does Earth's gravity work?
The answer is gravity: an invisible force that pulls objects toward each other. So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. 
