If gravity exists shouldn't anti-gravity exist in theory?

Answer 1

No, in theory gravity is purely an attractive force and never repels.

Answer 2

In fact, gravity does not really exist as a force!

According to Einsteins theory of General Relativity, gravity is an effect of geometry.

The geometry in question is 4 dimensional space-time geometry which is distorted and warped by matter and energy ... but geometry never-the-less.

So, what we perceive as gravity is actually an effect of the distortions in space-time due to the nearby influence of the earths large mass.

However - interesting results in Cosmology recently have led some theories to be put forward for the existence of a 'negative pressure energy' that acts to create anti-gravity!

To explain the observed expansion rate of the universe, it seems something needs to be causing an acceleration in the red-shifts - the expansion is quicker than expected. This hypothetical something is being called 'dark energy'.

So maybe there is an 'anti-gravity' out there making the universe continue to expand ...

Answer 3

Here's the thing... you're assuming gravity does exist as we perceive it... a downward force keeping us to the ground, so antigravity would be an upward force pushing us away from the ground, but gravity is just the name we give to the curvature of space-time, so if antigravity were to exist it would only be gravity in the opposite direction not an opposite force like positive and negative charges.

But to answer your question, yes... antigravity (as I've described it) should be possible to CREATE (If you can find how to create gravity) but most likely does not exist in nature unless perhaps part of the universe is antimatter and antimatter causes space-time to curve in the opposite direction (which is just a guess...)

By the way, would you people stop saying that you'll float away if you go into space? People float in space because they are in a constant free fall whil orbiting around the earth. Just look up why satelites orbit. The actual gravitational force up there is 95% of what it is right here. If you were to go to space and not orbit the Earth you'd be pulled back down and burn up in the atmosphere...

Answer 4

It does exist, but outside the realm of gravity existence. Just like anti-matter.

Answer 5

In particle physics, anti-gravity does exist.

Answer 6

Your question is very incoherent, yet i will attempt to shed some gentle in this subject remember for you. There are 4 necessary forces that govern the universe: Gravity, Electromagnetism (electrical energy & magnetism), and the reliable and susceptible nuclear forces (the forces that administration how atoms and subatomic debris behave). Gravity, in spite of the undeniable fact that it type of feels to be the main obtrusive and maximum expensive of all of those, is unquestionably the two the least-understood and weakest* of the forces in the universe. on an identical time as the three different forces have everyday varieties of debris to describe them (electrons for electromagnetism, subatomic debris for the two nuclear forces), gravity has no everyday particle. because there is plenty unknown approximately gravity, it may properly be achievable to control it as quickly because it rather is completely understood, in spite of the undeniable fact that that's only hypothesis and a hazard which you does not have the potential to apply in a respected communicate approximately extraterrestrial beings or destiny technologies. *To tutor that gravity is the weakest rigidity, think of lifting a coin off the floor utilising a magnet (electromagnetism). The coin is surely lifted up by potential of the magnet, and however the burden of the finished earth is retaining it down. each and each molecule on the earth is utilising gravity to tug the coin down, and however the rigidity exerted by potential of the tiny magnet wins in pulling the coin upwards. If by potential of antigravity you have been touching on a potential of overcoming that's rigidity (as antagonistic to thoroughly nullifying it), then those potential exist already. area shuttles are pushed upwards by potential of the rigidity of their combusting gasoline, airplanes by potential of the carry created by potential of their wings. i don't see what extraterrestrial beings could do with any of this yet i desire this facilitates answer your question.

Answer 7

No.

Of all the forces that exists, all are actually pureply attractive other than the electrostatic. So gravity is in the majority not the minority.

Answer 8

Pretty sure Newton covered this in his laws of pyshics.
We display "anti gravity" every time we jump, or pick an object up
i.e. the force pulling the object up exceeds gravity's force and the weight of the object enabling it to defy the earths gravitional pull.

Answer 9

the force that opposes gravity is called up-thrust, or lift. It is what being pulled to the core of the Earth so much that you cannot move. It is also what keeps objects in flight, etc. Like gravity, the larger the surface area, the more lift (hence why paper floats to the floor whilst a pin drops).

Answer 10

Dah...of course anti-gravity exists, once you get out of the gravitational pull of the earths atmosphere. Any planet or star that does not have gravity like the moon, that's why you float in anti-gravity.