# Jupiter and a Second Sun
**URL:** https://boards.straightdope.com/t/jupiter-and-a-second-sun/495560
**Category:** Factual Questions
**Created:** [May 6, 2009, 5:35pm UTC](https://boards.straightdope.com/t/jupiter-and-a-second-sun/495560 "2009-05-06T17:35:42Z")
**Posts on this page:** 3
**Page:** 3
### Author:  [@foolsguinea](https://boards.straightdope.com/u/foolsguinea)
#### Post date: [May 15, 2009, 3:44am UTC](https://boards.straightdope.com/t/jupiter-and-a-second-sun/495560/41 "2009-05-15T03:44:16Z")
Nope, that time it was what I meant to say. The dynamo theory was proposed in 1919, in a culture where dynamoes were a commonplace & breeder reactors were unknown. Now we have someone proposing a reactor. In each case, we’re imagining something understandable by our present science.
Really, I think whatever’s at Earth’s core may well be something we’ve never thought of.
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### Author:  [@Chronos](https://boards.straightdope.com/u/Chronos)
#### Post date: [May 15, 2009, 4:30am UTC](https://boards.straightdope.com/t/jupiter-and-a-second-sun/495560/42 "2009-05-15T04:30:09Z")
Except you still need some mechanism for a breeder reactor to produce a magnetic field, and that method is likely to end up being something that looks an awful lot like a dynamo, with or without the reactor.
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### Author:  [@Mr.Excellent](https://boards.straightdope.com/u/Mr.Excellent)
#### Post date: [May 15, 2009, 5:06am UTC](https://boards.straightdope.com/t/jupiter-and-a-second-sun/495560/43 "2009-05-15T05:06:38Z")
> [@KneadToKnow](#):
>
> What can this lead to? Something wonderful, I hope.
All these worlds are yours, except Europa. Attempt no landing there. All these worlds are yours, except Europa. Attempt no landing there. All these worlds are yours, except Europa. Attempt no landing th [/TRANSMISSION ENDS]
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