All Questions
5
questions
-2
votes
1
answer
193
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Is it possible that regular asteroids striking force (radially inward) could explain the remaining 43 arcsecs/century discrepancy? [closed]
Newton's gravity equations give 5557 arc-sec/century Mercury perihelion advancement Vs 5600 arcsec/century actual observed. is it possible that regular asteroids striking force(radially inward due to ...
0
votes
3
answers
252
views
Is the path that a planet takes orbiting the sun a centripetal one or one that follows a geodesic path?
Is the path that a planet takes orbiting the sun a centripetal one or one that follows a geodesic path? My point is that if the planet follows a centripetal path all objects on the planet will ...
- 719
2
votes
4
answers
328
views
Confusion regarding gravity not being a force
In high school, it was taught that formula for describing circular orbital velocity around a central body is derived by equating Newton's law of gravity with the centripetal force formula (under the ...
user166520
8
votes
1
answer
4k
views
Derivation for the weak field Newtonian metric around Earth
I have not seen any complete derivation for the metric in a limited newtonian case:
$$\begin{align}
ds^{2} = -(1+2\Phi)dt^{2} +(1-2\Phi)\left(dr^{2} + r^{2}(d\theta^{2} + \sin^{2} \theta\ d\phi^{2}...
- 485
2
votes
3
answers
613
views
Apparent non-aberration of gravitational waves
Since GR assumes that gravitational waves travel at speed $c$, we expect we would be able to some day detect an aberration effect similar the that of light. Of course, gravitational waves are so tiny ...
- 5,784