<p>We know over 4 billion years ago, Jupiter was created and started to head into the inner solar system until Saturn pulled Jupiter back out. In fact, we wouldn’t be here if Jupiter stayed inside the inner solar system. My question is, what force pulled Jupiter inside the inner solar system in the first place?</p>

CC BY-SA 4.0
2022-11-06T16:23:55.880Z
See [Grand tack hypothesis](https://en.wikipedia.org/wiki/Grand_tack_hypothesis)
GrapefruitIsAwesome
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2022-11-06T17:28:07.823Z
The linked article doesn't seem to answer the question.
Leos Ondra
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2022-11-06T18:06:41.493Z
@GrapefruitIsAwesome Yes, I know that Jupiter migrated inward. That’s what I said in my question. I am wondering why Jupiter migrated inward.
Prince Pugs
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2022-11-06T18:32:41.053Z
I wasn't intending to suggest the linked article directly addressed the question.  There's a lot of references for that article that may contain the answer or at least provide a good starting point.  From the first reference in the Wikipedia article "Because a huge amount of gas still swirled around the sun back then, the giant planet got caught in the currents of flowing gas and started to get pulled toward the sun. Jupiter spiraled slowly inward until it settled at a distance of about 1.5 astronomical units—about where Mars is now. (Mars was not there yet.)"
GrapefruitIsAwesome
CC BY-SA 4.0
2022-11-06T18:34:14.473Z
I'd attempt an answer myself, but I'm not feeling that great today.
GrapefruitIsAwesome
CC BY-SA 4.0
2022-11-07T01:15:16.133Z
You may found your answer here: https://astronomy.stackexchange.com/a/44768/35206
Nilay Ghosh
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2022-11-07T18:59:38.217Z
Short answer, which other commenters omitted is "we don't know, we just have many ideas that might work". After saying that first, only then I feel is it legit to reference all the theory papers.
AtmosphericPrisonEscape
<jupiter><solar-system-evolution>
Why did Jupiter spiral into the inner solar system?
Prince Pugs
# Why did Jupiter spiral into the inner solar system?

(Asked by: username_0 on 2022-11-06)

We know over 4 billion years ago, Jupiter was created and started to head into the inner solar system until Saturn pulled Jupiter back out. In fact, we wouldn’t be here if Jupiter stayed inside the inner solar system. My question is, what force pulled Jupiter inside the inner solar system in the first place?

**Tags:** jupiter, solar-system-evolution
> **Comments:**
> **username_1**: See [Grand tack hypothesis](https://en.wikipedia.org/wiki/Grand_tack_hypothesis)  
> **username_2**: The linked article doesn't seem to answer the question.  
> **username_0**: @GrapefruitIsAwesome Yes, I know that Jupiter migrated inward. That’s what I said in my question. I am wondering why Jupiter migrated inward.  
> **username_1**: I wasn't intending to suggest the linked article directly addressed the question.  There's a lot of references for that article that may contain the answer or at least provide a good starting point.  From the first reference in the Wikipedia article "Because a huge amount of gas still swirled around the sun back then, the giant planet got caught in the currents of flowing gas and started to get pulled toward the sun. Jupiter spiraled slowly inward until it settled at a distance of about 1.5 astronomical units—about where Mars is now. (Mars was not there yet.)"  
> **username_1**: I'd attempt an answer myself, but I'm not feeling that great today.  
> **username_3**: You may found your answer here: https://astronomy.stackexchange.com/a/44768/35206  
> **username_4**: Short answer, which other commenters omitted is "we don't know, we just have many ideas that might work". After saying that first, only then I feel is it legit to reference all the theory papers.  

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## 0 answers

