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It would not grow, if by grow you mean increase in volume. It would not decrease in density. If the earth was just made of water, gravity would still cause it to form a sphere. Its orbit around the sun would and does cause it to be slightly prolate or hot dog shaped with the long axis...

I could not follow Wellwisher's logic as well. If you are interested in a more detailed description of the big bang shock wave in a positively curved universe, the model is featured on the 'Alternatives' page on the website flatuniversesociety.com. This model appears to provide an alternative...

Not quite. The earth at its normal rotation rate is not spinning nearly fast enough to reduce the amount of force due to gravity on anything lying on its surface, including the atmosphere. The atmosphere is simply less dense than water so sits on top. Nothing flies off. By increasing the...

I am assuming for arguments sake you start from a position on the equator. Once the earth and you on its surface have reached a critical speed, you become weightless at the earth's surface, and being weightless you would not have any friction between you and the earth. The earth could double...

Assuming no atmosphere and a perfectly spherical earth, you would be in orbit right at the earth's surface. Not sure what point you are trying to make.

I assume you want me to assume there is no atmosphere and that the earth is not spinning... If the earth expanded slowly, when the radii of the earth and ISS's orbit were the same, the stationary earth would come into contact with the moving space station. The ISS would start to drag on the...

Follow your first two sentences. But from there I find it hard to follow your thinking....

I don't believe so. Theoretically, the spin could support such a planet at the equator. However, what would support the planet in the polar regions? Rock forming minerals would not be strong enough, assuming you are talking about a planet at least the size of Mercury or larger.

Can you try and explain this in different words or more explicit sentences. I am not following you.

I would like to get some clarity on what you are trying to say here in your last paragraph quoted above. I don't understand your first sentence of the last paragraph. In the second sentence, again I don't understand what you are trying to communicate. As well, you can't have something...

In the model incorporating a shock wave in a positively curved universe in which the compression wave carries 2/3rd the mass of the universe, all matter would accelerate towards it. There would be no requirement for dark energy.

Einstein's most notable thought experiment lead to his equivalence principle, where he compared the force caused by Newton's gravitation to an inertial force. Are you trying to go beyond this and, if so, please explain.

Not really. Can you explain this a little further?

The sun's gravity still acts on the loose objects keeping them in orbit around the sun.

Yes, and therefore objects at the poles would remain in the same orbit they were in before gravity ceased.

Sorry I answered without realizing that the earth's speed around the sun is upwards of 66,000 mph. The relatively slow speed of objects being flung off at sunset and sunrise positions would not collide with the sun. They would still be in relatively circular orbits, crossing back and forth...

Objects in areas between the adjacent and opposite sides of the earth to the sun would be flung into more and more highly eccentric orbits as they get closer to sunrise and sunset positions, setting most objects on a collision coarse with the sun.

If somehow you could turn off gravity, any loose item on the earths surface would start to float upwards. Slowly at first as objects would be traveling at about 1000 miles per hour the same speed as the earth below their feet. As the earth continued to turn after a few minutes you would appear...

This may be so, but bear in mind that a big bang shock wave would actually be a point in a finite positively curved universe, a mother of all black holes (designated the black pole and for frame of reference located at the south pole). In such a model, space could grow after the big bang for a...

Good point. I have not considered all aspects of the theory and the resistance required to create the compression wave may be one of them. I am a bit out of my depth on this particular aspect but will take a stab at it. The BB shock wave (in a positively curved universe) would be made up of...