<p>Indeed yes! Jupiter magnetosphere does protect the Galilean moons from cosmic rays and solar flares etc. Check out these articles:</p>
<ul>
<li><p><a href="https://www.discovermagazine.com/the-sciences/jupiter-shields-europa-from-cosmic-rays-that-could-erase-evidence-of-life" rel="nofollow noreferrer">https://www.discovermagazine.com/the-sciences/jupiter-shields-europa-from-cosmic-rays-that-could-erase-evidence-of-life</a></p>
</li>
<li><p><a href="https://www.mpg.de/9093461/F001_Focus_018-025.pdf" rel="nofollow noreferrer">https://www.mpg.de/9093461/F001_Focus_018-025.pdf</a></p>
</li>
</ul>
<p>For more elaborate answer, you can check up our sister site, Worldbuilding.SE</p>

CC BY-SA 4.0
2022-02-23T14:48:14.143Z
This is not scientifically founded, you quoted popsci articles, not even a review. Please cite research articles. Furthermore, you worldbuilding enthusiasts need to open up to the fact that magnetic fields do not exclusively protect atmospheres: https://ui.adsabs.harvard.edu/abs/2018A%26A...614L...3G/abstract
AtmosphericPrisonEscape
CC BY-SA 4.0
2022-02-23T18:00:47.920Z
@AtmosphericPrisonEscape - true, but atmospheric escape is a more gradual process. the OP was asking about a single event large enough to doom the earth. in that case i would speculate magnetospheres are more protective than not
giardia
CC BY-SA 4.0
2022-02-23T03:38:58.797Z
2022-02-23T03:38:58.797Z
Nilay Ghosh
<p>Teasing out a sci-fi story and would like to get things right science-wise. Sun's about to flare (yes, I know we're not great at predicting that yet but near future) and Earth's doomed. Would the increased distance from the Sun and Jupiter's magnetosphere protect the Galilean moons?</p>

CC BY-SA 4.0
2022-02-23T03:48:22.863Z
Jupiter's magnetosphere is a rather energetic environment. See https://en.wikipedia.org/wiki/Magnetosphere_of_Jupiter#Exploration_after_1970
PM 2Ring
CC BY-SA 4.0
2022-02-23T03:57:02.883Z
BTW, flares and coronal mass ejections tend to be fairly directional, so Jupiter would have to be fairly closely aligned to Earth to be at risk from the same flare that threatens Earth.
PM 2Ring
CC BY-SA 4.0
2022-02-23T10:47:39.663Z
I would think the radiation environment in Jupiter's magnetosphere is far harsher than any solar flare at the distance of Jupiter - but I could be wrong?
ProfRob
CC BY-SA 4.0
2022-02-23T17:59:09.873Z
cheapest solution would be to go underground for a while, and rebuild everything once the flare is over. the question of whether there is enough protection in the jovian magnetosphere is secondary to the question of what kind of flare this is to do enough damage to doom the earth.
giardia
<solar-system><solar-flare><galilean-moons><outer-solar-system>
Does the magnetosphere of Jupiter protect the Galilean Moons from solar flares?
Melfina the Blue
# Does the magnetosphere of Jupiter protect the Galilean Moons from solar flares?

(Asked by: username_0 on 2022-02-23)

Teasing out a sci-fi story and would like to get things right science-wise. Sun's about to flare (yes, I know we're not great at predicting that yet but near future) and Earth's doomed. Would the increased distance from the Sun and Jupiter's magnetosphere protect the Galilean moons?

**Tags:** solar-system, solar-flare, galilean-moons, outer-solar-system

> **Comments:**
> **username_1**: Jupiter's magnetosphere is a rather energetic environment. See https://en.wikipedia.org/wiki/Magnetosphere_of_Jupiter#Exploration_after_1970  
> **username_1**: BTW, flares and coronal mass ejections tend to be fairly directional, so Jupiter would have to be fairly closely aligned to Earth to be at risk from the same flare that threatens Earth.  
> **username_2**: I would think the radiation environment in Jupiter's magnetosphere is far harsher than any solar flare at the distance of Jupiter - but I could be wrong?  
> **username_3**: cheapest solution would be to go underground for a while, and rebuild everything once the flare is over. the question of whether there is enough protection in the jovian magnetosphere is secondary to the question of what kind of flare this is to do enough damage to doom the earth.  

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## 1 answers

### Answer by username_4 on 2022-02-23. Score: 1

Indeed yes! Jupiter magnetosphere does protect the Galilean moons from cosmic rays and solar flares etc. Check out these articles:

* <https://www.discovermagazine.com/the-sciences/jupiter-shields-europa-from-cosmic-rays-that-could-erase-evidence-of-life>
* <https://www.mpg.de/9093461/F001_Focus_018-025.pdf>

For more elaborate answer, you can check up our sister site, Worldbuilding.SE

> **Comments:**
> **username_5**: This is not scientifically founded, you quoted popsci articles, not even a review. Please cite research articles. Furthermore, you worldbuilding enthusiasts need to open up to the fact that magnetic fields do not exclusively protect atmospheres: https://ui.adsabs.harvard.edu/abs/2018A%26A...614L...3G/abstract  
> **username_3**: @username_5 - true, but atmospheric escape is a more gradual process. the OP was asking about a single event large enough to doom the earth. in that case i would speculate magnetospheres are more protective than not  

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