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0 pointsjdmichal5y ago0 comments

In the left-hand image, an orbit would be a horizontal line, because it's a constant distance. So it's a mirror of the time axis, but translated upwards in space. It would be exactly the same axis-mirroring translation in the other images. So, importantly, it would not be a line in the right-hand image.

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bweitzman5y ago

The concept of a constant distance orbit doesn't make much sense in 1D. A horizontal line in this model wouldn't indicate an orbit, but rather a completely stationary object. It would then make sense for the world line to curved because it must be accelerating in order to resist the attraction of the body it's near.

By definition, the world line of a stable orbit would be a line in curved spacetime.

j / k navigate · click thread line to collapse

0 pointsjdmichal5y ago0 comments

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bweitzman5y ago

By definition, the world line of a stable orbit would be a line in curved spacetime.

j / k navigate · click thread line to collapse