- #1

peanutaxis

- 25

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- TL;DR Summary
- Does the fact that gravity moves at the speed of light affect how planets move?

Hi,

If a 1000km space rock called Pluto can meaningfully perturb the orbit of Neptune - which is some

Is there any effect, for instance, from the fact that the earth is attracted to where Mars was 3 minutes ago (at closest distance) and vice versa? (Yes, I realise we also

Does this have any effect? Is it accounted for when using GR rather than Newton to calculate things?

Thanks in advance.

p

If a 1000km space rock called Pluto can meaningfully perturb the orbit of Neptune - which is some

*7,800*times more massive - at a distance of no less that 2.4AU, then surely the fact that gravity moves at the speed of light would produce significant effects too(?)Is there any effect, for instance, from the fact that the earth is attracted to where Mars was 3 minutes ago (at closest distance) and vice versa? (Yes, I realise we also

*see*Mars where is was 3 minutes ago)Does this have any effect? Is it accounted for when using GR rather than Newton to calculate things?

Thanks in advance.

p