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Alphaesk t1_jdt305c wrote

Reply to comment by Daveinatx in Scientists discover supermassive black hole that now faces Earth by Bcap2219

Imagine it pulling us to the sun closer each year while it’s getting warmer and warmer

That would make a nice movie

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BeatsMeByDre t1_jdt3eoo wrote

It's a Twilight Zone episode.

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karma_the_sequel t1_jdtt84x wrote

Starring William Shatner!

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Devertized t1_jduyvf2 wrote

Just recently I had this conversation with one of my mates. How the fuck did William Shatner not become a prominent figure in movies? He's fucking amazing!

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dubspace t1_je2w7u8 wrote

Probably one of those "We'd love to cast you in this movie. You're a great actor, but we think everyone would just see you as Captain Kirk." type of deals.

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Alphaesk t1_jdt3l61 wrote

I was looking for sci fi show but this one has really bad ratings

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callinglordshiva t1_jdtbcmr wrote

The 1959 series is really good, or maybe its nostalgic for me.

Theres a new series from a few years ago which is trash

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Stenthal t1_jdtjqc0 wrote

There's also a new series from twenty years ago which was trash, and a new series from forty years ago which was trash. Maybe they'll get it right in 2039.

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nextuniverseplease t1_jdtess6 wrote

Oh man, the original series is FANTASTIC. Some episodes are campy but still entertaining. I highly recommend giving it a shot.

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AlexOwlson t1_jduhvo2 wrote

Wouldn't even be possible. The gravitational pull would be stronger when we're closer to it than the sun, and weaker when we're on the far side of the sun. The earth spends half a year with it's center of mass closer to the black hole than the center of mass is to the black hole and half a year further.

Meaning if it were able to pull the earth at all, it would necessarily pull us further from the sun, not closer. The same is true for all objects outside the earth's orbit around the sun.

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Alphaesk t1_jduhz3c wrote

Thanks for the explanation, so mass of the object has no role on the pull and sun and earth gets pulled the same?

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AlexOwlson t1_jduiez6 wrote

Yeah both would get pulled. Mass ratio between the objects has effect, but in this case both the sun's and earth's mass would be negligible compared to the black hole, so we can assume the black hole is not pulled back into an orbit around the sun-earth system.

Distance is a more important metric, as the effect is divided by the distance squared. So the further away two objects are, the less they pull each other.

Now assuming both earth and sun gets pulled what would happen is the earth's orbit would become more and more elliptical over time and the average radius would also grow over time, moving us on average further away from the sun. At the closest extreme of the elliptical path it might be possible we could pass closer to the sun than before the black hole starting pulling, but this requires a bit more mathematics than I'm willing to do as I'm supposed to be working atm.

Long story short: only the sun itself can pull us closer to the sun, but as long as we are orbiting through approximate vacuum that's not gonna happen. With friction though, say if the sun's orbit passed through a gas cloud that might happen, but we'd probably have much more serious problems before crashing into the sun if that ever happened.

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Alphaesk t1_jduioa7 wrote

Well you’ve started the week productive for sure mate, have good week

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Devertized t1_jduz6t8 wrote

Wouldnt it be possible, in theory, to shift the earth trajectory to a point where the sun's gravitational field would pull us closer ever so slightly until collison?

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AlexOwlson t1_jdvpc5c wrote

Even in theory it would be difficult. With gravity alone I only see it would be possible if either there's a massive object that magically could turn on and off it's gravitational pull in sync with the earth's orbit around the sun, or if an object actually passes through the solar system just past the sun and at that moment is lucky enough to dart the earth into the sun (which would be one extreme unlikely hole-in-one).

I think there's a lot of thinking that's a bit misunderstood here, but the entire universe except for mercury and venus is actually pulling the earth away from it's orbit around the sun. In our local solar system, the sun is massive enough that's it's only a few centimeters per year that we're creeping away, but there's no way anything outside our orbit could pull us into the sun, except maybe for some bizarre theoretical phenomena, assuming gravitation is the only external force (a collision, for instance, is a completely different story!).

If a force was strong enough to do that, it would pull the sun out of that collision course as well and we'd just end up with an even more extreme orbit around our yellow friend, if we would even be able to maintain that as we accelerated towards whatever is creating the massive pull.

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flukshun t1_jdv0mcw wrote

We're in that movie already. The special effects crew is working overtime to make it get warmer and warmer.

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Sinthetick t1_jdx7aiz wrote

The planet would vaporize before it's orbit changed appreciably.

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