Is there a planet nine? Or is there a black hole in place of planet nine?
@GNUxeava its still just a mere hypothesis. orbits of some TNOs may hint towards there being one influencing those orbits. it would be hard to spot since its so far out and we have no clue in what point of that predicted orbit it actually is.
but there are also papers out there that suggest it may also not exist.
it definitely wouldn't be a black hole since the gravitational influence of those would be very very obvious this close. (the smallest black holes still have a mass of more than ~4 suns)
but there are also papers out there that suggest it may also not exist.
it definitely wouldn't be a black hole since the gravitational influence of those would be very very obvious this close. (the smallest black holes still have a mass of more than ~4 suns)
@absturztaube but gravitational pull gets super strong only when you get close to it. If the Sun were to shrink to the size of a tennis ball, the Earth would still remain practically unaffected by the new sun's gravity.
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@GNUxeava @absturztaube
not exactly how it works- how are the other factors such as rotational speed compensated? Are all other factors outside of surface size remaining constant?
@absturztaube@fedi.absturztau.be
@lucifargundam @GNUxeava the thought experiment goes like this: replace the sun with a 1 solar mass black hole that has the same rotational speed as the sun has. it wont affect the orbits
@absturztaube @lucifargundam
Wouldn't varied material densities affect gravity fluctuations?
Or would they be negligible in this scenario?
I know Earth's gravity variations have significant effects on the surface.
@Paradox @lucifargundam a black hole doesn't really have gravitational fluctuations since all of its mass is in a singularity. what can have an effect is the rotation since it starts to swirl spacetime into a vortex.
@Paradox @lucifargundam good question tho
