- #1
OOF
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Choose any distance in the universe, a million light years. This distance creates around us a sphere that divides the universe into three parts. Universe outside the sphere, universe within the sphere and universe on the surface of the sphere.
We are going to determine the gravity of the universe a million years.
1- Outside the sphere, the gravity of a million years ago does not affect us, it is very far away and has not yet arrived.
2- Within the sphere the gravity of a million years ago does not affect us, it has surpassed us.
3- Only the gravity of a million years ago generated by the matter contained in the spherical surface acts on us.
But in this case it is null, in the same way that the gravity of a planet at its center is zero.
Conclusion the gravity of the universe a million years ago does not affect us.
Two million years ago, either.
The one of three million years ago either ...
Agree?
We are going to determine the gravity of the universe a million years.
1- Outside the sphere, the gravity of a million years ago does not affect us, it is very far away and has not yet arrived.
2- Within the sphere the gravity of a million years ago does not affect us, it has surpassed us.
3- Only the gravity of a million years ago generated by the matter contained in the spherical surface acts on us.
But in this case it is null, in the same way that the gravity of a planet at its center is zero.
Conclusion the gravity of the universe a million years ago does not affect us.
Two million years ago, either.
The one of three million years ago either ...
Agree?