Juno Science Results |
Juno Science Results |
May 25 2017, 06:19 PM
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
https://www.nasa.gov/feature/junoteleconference
Many surprises! Jupiter not uniform below clouds! Giant ammonia plume comes up from equator! Core diffuse, possibly dissolving! Magnetic field up close has surprised! Congrats on the amateur images everyone! -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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May 25 2017, 10:59 PM
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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May 27 2017, 11:31 PM
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
I was curious about the estimated mass of heavy elements in Jupiter, which is possibly the single most fundamental statistic that Juno can derive. At this admittedly very early point in Juno's mission, the paper by Wahl, et al estimated 7-25 Earth masses. Keep in mind that Militzer, et al (2008) estimated the same at 14-18 Earth masses, which is better constrained. Hopefully, the remaining (>90%) of Juno's orbits will nail this down much better. (I wonder if the earlier result actually had a greater uncertainty… some research admits to some fundamental unknowns and derive results that are presuming some quantities that aren't actually known.)
What Jupiter's structure is like tells us about the evolution and dynamics of large planets, but the bulk composition tells us the really fundamental thing – what kinds of protoplanetary clouds make what kinds of planetary systems in general. |
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