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Say hello to Bary (mander.xyz)

submitted 1 week ago by fossilesque@mander.xyz to c/science_memes@mander.xyz

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https://en.wikipedia.org/wiki/Barycenter_(astronomy)

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[-] ProgrammingSocks@pawb.social 5 points 6 days ago

This is true about any 2 objects with mass.

[-] jsomae@lemmy.ml 26 points 6 days ago

No, it is not true in general that the barycenter lies outside both objects.

[-] ProgrammingSocks@pawb.social 0 points 6 days ago* (last edited 6 days ago)

I mean, sure, but you can reasonably glean that I'm just talking about the fact that any 2 objects with mass exert gravity on each other. The OP is facebook-tier

[-] jsomae@lemmy.ml 2 points 6 days ago

I can't reasonably glean that, because the OP clearly says this:

It is so massive that both Jupiter & Sun orbit around a common point that lies outside the Sun known as the "barycenter".

I agree that OP is facebook-tier but your reply is reddit-tier :P

[-] ProgrammingSocks@pawb.social 1 points 5 days ago* (last edited 5 days ago)

You're being pedantic to levels most redditors could only dream of. A barycenter isn't even necessarily outside the 2 objects, if you took the OP to mean that, it's incorrect information anyways.

[-] jsomae@lemmy.ml 1 points 5 days ago* (last edited 5 days ago)

The OP does not claim that all barycenters are outside of the sun. OP correctly claims that Jupiter & Sun orbit a certain point, and that point is known as the "barycenter," and that point is outside the sun. I'll admit they could have gone further to convey the additional curiosity that for other planets the sun-planet barycenter is within the sun, but then it might not be facebook-tier anymore.

I literally do not understand why you think I'm being pedantic here. The OP text is short and contains no obvious errors that I can see. Perhaps to someone who has made a mistake and doesn't want to admit it, attempts by others to point out this mistake must resemble pedanticism.

[-] kerrigan778@lemmy.blahaj.zone 11 points 6 days ago

"outside the objects"

[-] SippyCup@feddit.nl 7 points 6 days ago

It was outside the environment.

[-] OhStopYellingAtMe@lemmy.world 4 points 6 days ago

A wave hit it.

[-] boonhet@sopuli.xyz 3 points 6 days ago

The front is not supposed to fall off

[-] ProgrammingSocks@pawb.social 1 points 5 days ago

Barycenters are not necessarily outside the objects, either.

[-] LarsIsCool@lemmy.world 179 points 1 week ago

Related: https://xkcd.com/2898/

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[-] essell@lemmy.world 150 points 1 week ago

I believe that's the same for every planet. And every moon. For every orbit.

Its just that the barycenter is inside the more massive object when one is much more massive than the other. Not that this makes much of a difference to anything.

[-] deadbeef79000@lemmy.nz 65 points 1 week ago* (last edited 1 week ago)

Correct.

I also believe that one of the criteria for a binary planet is that the barycenter is outside either body. Like Pluto/Charon.

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[-] Eranziel@lemmy.world 129 points 1 week ago

The barycenter is sometimes outside the diameter of the sun. Not always, and I believe not even usually.

Yes, today I'm being that guy. Still a cool factoid.

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[-] Droggelbecher@lemmy.world 91 points 1 week ago

The way this is phrased makes it sound like there's a certain threshold where this starts happening. That's not right. Even a grain of dust wouldn't orbit the sun, they still orbit their common barycenter. A less misleading way of phrasing would be that Jupiter is massive enough that the barycenter of it and the sun actually lies outside the sun, which is still a cool fun fact.

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[-] nuko147@lemmy.world 63 points 1 week ago* (last edited 1 week ago)

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