Why Is the JUICE Mission Targeting Ganymede Instead of Europa?

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Discussion Overview

The discussion centers on the motivations behind the JUICE mission's focus on Ganymede rather than Europa, particularly in relation to the potential for life on these moons of Jupiter. Participants explore the scientific rationale, existing literature, and comparative assessments of the two celestial bodies.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants question the rationale for targeting Ganymede, noting that while it is believed to have a liquid water ocean, there seems to be less excitement about its potential for life compared to Europa.
  • It is suggested that the location of Ganymede's ocean, being deeper beneath its surface than Europa's, may contribute to the perception that it is less favorable for life.
  • One participant references a source that claims the chances of life existing on Europa are higher due to its ocean's proximity to the surface, while Ganymede's magnetic field might offer some protection from radiation.
  • Another participant expresses a desire for more scientific analysis of Ganymede, indicating a lack of awareness about its potential ocean.
  • Concerns are raised about the credibility of sources cited in the discussion, with one participant dismissing a referenced link as unreliable.

Areas of Agreement / Disagreement

Participants express differing views on the potential for life on Ganymede versus Europa, with no consensus reached on the merits of the JUICE mission's focus. The discussion reflects a mix of curiosity and skepticism regarding the scientific literature and the implications for future exploration.

Contextual Notes

There are unresolved questions regarding the assumptions made about the habitability of Ganymede and Europa, as well as the implications of the JUICE mission's objectives. The discussion also highlights varying interpretations of existing research and the reliability of sources.

skydivephil
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Are there any papers describing the possibility of life on Ganymede? I understand it is believed to have a liquid water ocean. But few seem as excited about Ganymede as they are about Europa. Is this becuase of the location of the ocean?

If there are few or no prospects for lilfe on Ganymede why is the JUICE mission focusing on Ganymede? I thought Europa was what everyone is exicted about , now I read the Laplace is canceled and ESA are looking to go ahead to Ganymede and prety much forget Europa.
 
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skydivephil said:
Are there any papers describing the possibility of life on Ganymede? I understand it is believed to have a liquid water ocean. But few seem as excited about Ganymede as they are about Europa. Is this becuase of the location of the ocean?

If there are few or no prospects for lilfe on Ganymede why is the JUICE mission focusing on Ganymede? I thought Europa was what everyone is exicted about , now I read the Laplace is canceled and ESA are looking to go ahead to Ganymede and prety much forget Europa.

Here is a relevant excerpt on Gaymede:

Possibility of Life


It has been suggested that Ganymede may be amenable to life. However, scientists say that the chances of life existing on Europa are much higher than on Ganymede, because Europa's ocean is closer to the surface than Ganymede's.

While temperatures are extremely low, & there is very little atmosphere, it does have its own magnetic field that might protect life from harmful radiation, & it lies in a relatively quiet radio zone around Jupiter unlike Europa.
http://www.info-facts.com/ganymede.htm



The Juice Mission does schedule more orbital time to Gaynmede than to Europa.
http://www.lpi.usra.edu/pss/dec2011/presentations/JoanSalute.pdf
 
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I'd love to see more scientific analysis on Ganymede via probe missions and telescope. I was unaware that it is thought to have an ocean. That link referenced by Radrook isn't worth a darn, by the way (the content, that is; the link works fine, but I know BS when I see it).
 
Super Luminal said:
I'd love to see more scientific analysis on Ganymede via probe missions and telescope. I was unaware that it is thought to have an ocean. That link referenced by Radrook isn't worth a darn, by the way (the content, that is; the link works fine, but I know BS when I see it).

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