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Juno Science Results
Paolo
post Feb 28 2018, 06:48 AM
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QUOTE (mcaplinger @ Feb 28 2018, 07:44 AM) *
There was actually a proposal for a low-cost camera that fit within the data allocation for the Galileo probe, but it wasn't selected.


given how limited the data return from the Galileo orbiter eventually was, we can be thankful for that!
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Explorer1
post Feb 28 2018, 04:33 PM
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It seems that for the foreseeable future, the only views from any of the gas giant atmospheres will remain those gorgeous artist's concepts (Don Dixon, Adolf Schaller, etc.)
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Gerald
post Mar 7 2018, 07:07 PM
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Today, four Nature papers about new findings by the Juno mission have been released online, but only the abstracts are free:
Clusters of cyclones encircling Jupiter’s poles
A suppression of differential rotation in Jupiter’s deep interior
Jupiter’s atmospheric jet streams extend thousands of kilometres deep
Measurement of Jupiter’s asymmetric gravity field

This allows to discuss the circumpolar cyclones on the missionjuno Think Tank site.
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Gerald
post Mar 7 2018, 07:59 PM
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Additionally, John Rogers has released a version of the CPC observations on the BAA website, together with several animations we compiled over a little more than a year.
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cIclops
post Dec 13 2018, 04:26 PM
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VIDEO: 2018 Fall Meeting Press Conference: A mid-mission report on the discoveries of NASA’s Juno


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Bjorn Jonsson
post Dec 16 2018, 10:57 PM
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A very interesting video. I was particularly impressed by the SRU images; Jupiter's nightside in Ioshine!
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scalbers
post Dec 30 2018, 10:42 PM
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I wonder when models will be able to simulate the patterns and the colors of the clouds. In the (pre-Juno) paper below, figure 5 shows the patterns, though doesn't include the microphysics/chemistry to show things like cloud opacity and colors.

https://www.researchgate.net/publication/25...ian_atmospheres (see figure 5a).


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JRehling
post Jan 15 2021, 04:53 PM
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I've done some recent reading on Juno findings and moreover, tried to illustrate for myself how Juno science has fit into earlier understanding.

One simple kind of framing that is eternally hard to grasp with Jupiter is just how big the planet is and how limited in scope our studies from the top looking down are. Simply put, the Galileo Probe's descent (while instruments were operating) penetrated only 1/450th of the way to Jupiter's center. Juno has revealed that the part of the upper atmosphere that has winds is 3000 km deep – about 20 times the depth of the Galileo Probe's descent, and about 1/25th of the whole planet.

There has been some beautiful work regarding Juno's observed anisotropy of ammonia in the upper atmosphere.

https://www.nasa.gov/feature/jpl/shallow-li...juno-scientists

In retrospect, it seems obvious: When a minority atmospheric component undergoes phase transitions, that allows for mechanisms that can segregate the compound considerably from one place to another (e.g., with water on Earth).

It's also been wonderful that Juno and the end of the Cassini mission provided an almost simultaneous comparison of Jupiter and Saturn and the simple synthesis is that of the three layers in each planet – let's call the upper atmosphere with winds (A), a dense "mantle" of liquid metallic hydrogen (cool.gif, and whatever core exists, apparently fuzzy in its boundaries ( C ) – Jupiter has a relatively small extent of A and C and is mainly B; Saturn, in contrast, has a much more even division of A, B, and C.

We're still waiting to get an answer on the single question that most motivated Juno – how much core is there? However, the discovery of a fuzzy mantle seems to speak to the formation of Jupiter. This seemingly precludes any origin in which a gigantic rocky-metal core formed first and then the hydrogen-helium atmosphere was pulled from the protoplanetary nebula onto it.

When they announced that an orbiter would be the choice of followup mission for addressing what the Galileo Probe failed to measure, I was skeptical but in retrospect, this was overwhelmingly the right choice. An entry probe could not possibly examine horizontal variations in Jupiter's structure and even with remarkable improvements in depth of penetration could not have probed as deeply as Juno has.

I'm sure there's a lot more Juno science to come. This has really been a wonderful mission even aside from the breathtaking imagery which was never the inspiration for the mission in the first place. Studying the interior of Jupiter is a huge challenge and kudos to the people who conceived of this mission and made it real.

Edit: Here's a nice recent synthesis of work on the deep interior.
https://arxiv.org/pdf/1901.05697.pdf
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Brian Swift
post Oct 26 2021, 09:46 PM
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From @NASASolarSystem tweet:

Join experts from our #JunoMission as they reveal new findings that provide a more comprehensive understanding of Jupiter's roiling atmosphere.
Thursday, Oct. 28
3 p.m. EDT (1900 GMT)
Watch here or at http://nasa.gov/live
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vikingmars
post Nov 30 2021, 04:20 PM
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New results from Juno were published in the last 19 November issue of Science smile.gif :
- "The depth of Jupiter’s Great Red Spot constrained by Juno gravity overflights";
- "Microwave observations reveal the deep extent and structure of Jupiter’s atmospheric vortices".
(weblink : https://www.science.org/toc/science/374/6570 )

And look at the truly spectacular image published on the cover : any idea when it was taken ?
Have you seen it before ?
Attached Image
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Tom Tamlyn
post Dec 1 2021, 01:07 AM
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The image processing is credited to Kevin Gill. He's a member here, and you could send him a PM, although he's not very active.

Or you could post the question on his twitter feed. https://twitter.com/kevinmgill
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vikingmars
post Dec 1 2021, 04:42 PM
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QUOTE (Tom Tamlyn @ Dec 1 2021, 02:07 AM) *
The image processing is credited to Kevin Gill. He's a member here, and you could send him a PM, although he's not very active.
Or you could post the question on his twitter feed. https://twitter.com/kevinmgill

Thanks a lot Tom smile.gif
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mcaplinger
post Dec 1 2021, 05:36 PM
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QUOTE (Tom Tamlyn @ Nov 30 2021, 05:07 PM) *
The image processing is credited to Kevin Gill. He's a member here, and you could send him a PM, although he's not very active.

He's probably too busy processing Junocam images, when he's not working his day job at JPL on MSL ops. I always get a kick out of seeing his name on MSL project emails when he is on-shift.


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Disclaimer: This post is based on public information only. Any opinions are my own.
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djellison
post Dec 1 2021, 09:16 PM
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Yeah - he's an awesome part of the OPGS and ECAM teams. I was so pleased when his name came up as someone who could join our little ECAM team - I jumped at the chance smile.gif
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cIclops
post Dec 19 2021, 06:48 PM
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#AGU21 Science Press briefing 17 December 2021

Latest results about the gas giant’s Great Blue Spot, polar cyclones, magnetosphere, rings, interior and Imagery contributions of the mission’s citizen scientists.


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