# What Causes Gravity? Insulation & Density Explained

• Pocketwatch2
In summary, the reason for gravity is due to the density and composition of the Earth's materials, as well as the effects of spacetime according to Einstein's theory of general relativity. Conventional science provides a suitable explanation for gravity, while other speculative ideas can raise more questions than answers.
Pocketwatch2
The reason why we have gravity.

I think it is because of the insulation we have between us and the center of the Earth.

The Earth beneath us separates space itself. Space wants to go back to that center point in the Earth, however it can't because the elements in the ground are in the way.

So, space is always pushing down on us and everything on the surface of Earth, trying to go to that center point.

Now, let's think in terms of density.

For instance, what if the Earth was made of aluminum. Aluminum is not a dense material, so it does not insulate space from the center point very well.
It has too much empty spaces in it's molecules for space itself to occupy. Therefore we would weigh much less on the surface of an aluminum planet. Space can not push back very hard with there being too much space between us and the center point.

Now, if the Earth was made of a much denser material, like gold, as a good example.

Gold would be a very good insulation against space. There is much less space between the molecules than aluminum.
On a planet of solid gold the same size of as our Earth, we would weigh an incredible amount. Space would be pushing us toward the center point extremely hard.

So, thankfully, we have just the right density of materials, and just enough space under us that gives us a tolerable push toward the center point from the space around us.

Space appears to be a form of energy.

Or it could be that the Earth under us simply compresses space like a spring, and it pushes back on us.

I know that this is not the conventional answer, but conventional science only states that gravity exists, yet gives no suitable explanation for it.

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Mass causes gravity. There is nothing magical about the center of the earth. An object on the surface experiences gravitational attraction to every bit of mass in the earth; the core, the mantel, the mountains to the west, etc; all those forces just add up to give a net force that points towards the center of the earth.

Words such as "space", "density", and "insulation" have very specific meanings in science, and should be used carefully, otherwise your thoughts come across as nonsense. For instance, space cannot "push" because it is not a force.

Pocketwatch2 said:
I know that this is not the conventional answer, but conventional science only states that gravity exists, yet gives no suitable explanation for it.

It certainly is not a conventional answer. The real issue with your suggestion of what gravity is, is that it is so speculative with no explanation for why space wants to get to the center of the earth. Or why space isn't at the center of the Earth right now (as most people believe it is). You are attempting to explain gravity, but by your attempt at it you raise more questions than we have right now.

There is some explanation for gravity in Einstein's theory of general relativity. According to that theory mass/energy warp spacetime, creating an effect that appears to look like gravity. Basically it says that mass/energy tell spacetime how to curve and spacetime tells mass/energy how to move. You might find http://en.wikipedia.org/wiki/Geodesic" interesting.

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The explanation of gravity by conventional science is perfectly suitable to me. It sounds like you just don't like/understand it.

I appreciate your curiosity and attempt to explain the concept of gravity through insulation and density. However, I must point out that your explanation is not entirely accurate.

Gravity is a fundamental force of nature that exists between all objects with mass. It is not caused by insulation or density, but rather by the mass of an object. The more mass an object has, the stronger its gravitational pull will be.

Moreover, the concept of space pushing down on us is not supported by scientific evidence. In fact, it is the opposite - objects with mass create a curvature in space-time, and it is this curvature that causes other objects to be pulled towards it.

Density does play a role in the strength of gravity, but it is not the sole determining factor. For example, the Earth's core is much denser than its surface, yet the gravitational pull at the surface is still stronger due to the larger mass of the entire planet.

In short, while your attempt to explain gravity is creative, it does not align with our current understanding of this fundamental force. Scientists continue to study and explore the concept of gravity, and there is still much to be discovered and understood about it.

## 1. What is gravity and how does it work?

Gravity is a fundamental force that exists between any two objects with mass. It is responsible for the attraction between objects, causing them to move towards each other. This force is what keeps us grounded on the Earth and governs the motion of planets and other celestial bodies.

## 2. What causes gravity?

The exact cause of gravity is still a topic of debate among scientists. According to Albert Einstein's theory of general relativity, gravity is a result of the warping of space-time caused by the presence of mass. In simpler terms, the more massive an object is, the more it curves the space-time around it, creating a gravitational pull.

## 3. How does insulation affect gravity?

Insulation does not have any direct effect on gravity. Insulation is a material that helps to regulate the transfer of heat, while gravity is a force that exists between objects with mass. However, insulation can affect the temperature of an object, which can indirectly impact its mass and therefore, its gravitational force.

## 4. Can density affect gravity?

Yes, density can affect gravity. Density is a measure of an object's mass per unit volume. The more massive an object is, the stronger its gravitational pull will be. Therefore, two objects with the same volume but different densities will have different gravitational forces.

## 5. How does gravity work in space?

Gravity works in the same way in space as it does on Earth. Objects with mass still attract each other, but in the absence of other forces, they will continue to move in a straight line instead of being pulled towards each other. This is why astronauts in space appear to be weightless, as they are in a constant state of free fall towards the Earth, but their horizontal motion keeps them from falling.

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