Reversed Gravity: Antigravity Effects on Spacetime

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In summary, the conversation discusses the concept of antigravity and the possibility of gravity being turned into a repulsive force. The group speculates about the effects of such a change on the universe, with the consensus being that all matter would fly apart immediately on a larger scale. However, on a smaller scale, such as with humans, the electromagnetic force would likely keep things together. The conversation also considers the possibility of simulating the effects of repulsive gravity on planets and stars, and concludes that it would likely result in a similar outcome as removing gravity altogether. Ultimately, it is agreed that in either scenario, lack of atmosphere would lead to the demise of all living beings.
  • #1
abuguchie
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I've seen several posts on antigravity and theories on whether it can or cannot be a repulsive force as well as an attractive one.
My question is, what would happen if all gravity in the Universe was somehow made repulsive?how would that affect spacetime? Would everything remain exactly the same?
 
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  • #2
abuguchie said:
My question is, what would happen if all gravity in the Universe was somehow made repulsive?how would that affect spacetime? Would everything remain exactly the same?
Well, all matter would fly apart...
 
  • #3
FtlIsAwesome said:
Well, all matter would fly apart...

Well, not exactly. On a smaller scale, like with humans, you probably wouldn't notice I suspect as the electromagnetic force keeps things together. On planetary and higher scales, however, things would definitely fly apart immediately. Our bodies wouldn't fly apart themselves but ... well, the planet would send us flying away!
 
  • #4
We'd die from lack of atmosphere. :eek:


It'd be interesting to see a simulation of a planet blowing up due to reversed gravity. :cool:
Or a star. Or... etc etc.
 
  • #5
Would it have the same effect as simply taking the gravity away?
 
  • #6
abuguchie said:
Would it have the same effect as simply taking the gravity away?
Similar, but not quite. With repulsive gravity objects will fly apart much faster.
Planets would probably still explode if there was no gravity instead of reversed gravity. Because they are under a lot of compression and once that compression is released they'll fly apart.
In both situations we'd die from lack of air.
 

1. What is reversed gravity?

Reversed gravity, also known as antigravity, is a theoretical concept that suggests the existence of a force that repels instead of attracting objects. This would result in the reversal of the effects of gravity on objects and spacetime.

2. How is reversed gravity related to spacetime?

Reversed gravity would have a significant impact on the curvature of spacetime, as it would essentially reverse the direction of gravitational pull. This could potentially alter the fabric of spacetime and affect the laws of physics.

3. What evidence is there for reversed gravity?

Currently, there is no concrete evidence for the existence of reversed gravity. It remains a theoretical concept that has not been proven through scientific experiments or observations.

4. Could reversed gravity be used for space travel?

The potential applications of reversed gravity for space travel are still highly speculative and debated among scientists. While it could theoretically enable faster travel and reduce the effects of gravity on astronauts, the technology and understanding of reversed gravity are not yet advanced enough to make it a practical solution.

5. What are the implications of discovering reversed gravity?

If reversed gravity was proven to exist, it would revolutionize our understanding of the laws of physics and the universe. It could also potentially lead to new technologies and advancements in space travel and exploration.

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