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Europa PR, A couple of new posts to the Photojournal
JRehling
post Dec 20 2007, 09:26 PM
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Thick or Thin Ice Shell on Europa?
http://photojournal.jpl.nasa.gov/catalog/PIA10131

Europa Tide Movie
http://photojournal.jpl.nasa.gov/catalog/PIA10149

I'm not sure that there is any new science involved. Seems to me like some nice eye candy for the purpose of getting Europa into the collective consciousness before the next flagship is chosen.
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dvandorn
post Dec 21 2007, 09:46 PM
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Io is just a whole order of magnitude more difficult to do, in-close. The radiation environment there is extraordinary. The surface conditions on most of the globe are straight from Dante's Inferno. Orbiters and landers would be fried extremely fast.

You almost have to do your Io science from something of a distance.

-the other Doug


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“The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Mariner9
post Dec 22 2007, 02:45 AM
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QUOTE (dvandorn @ Dec 21 2007, 01:46 PM) *
Io is just a whole order of magnitude more difficult to do, in-close. The radiation environment there is extraordinary. The surface conditions on most of the globe are straight from Dante's Inferno. Orbiters and landers would be fried extremely fast.
-the other Doug



I agree that doing an Io Orbiter or lander would be really expensive. And the science payload on something like JSO is also very heavy and very expensive.

I was specifially reffering to the Billion Dollar mission class.... essentially a bit of a beefed up New Frontiers budget. For that price you could reasonably do a three axis stabilzed, moderately instrumented probe. Put it into a highly elliptical orbit and make repeated encounters. A single such flyby would return more data than Galileo did over it's entire mission. Even if the probe's electronics can only handle 10-20 flybys (which is roughly what Juno is designed for, IIRC) that is a hell of a science return.

I keep hoping Europe would step up to that plate, see a chance to do some exciting science that the US wasn't interested in. Unfortunately they appear to have been hi-jacked by the Europa Mafia.
They are also looking for partners. If that results in us somehow managing to afford both Titan and a Europa mission in the next 20 years, horay.

Otherwise.... shame they didn't jump at Io while we were engaged elsewhere. Or at just about anything in the outer planets... there are so many lonely targets out there. Bare Bones Uranian Orbiter anyone? Anyone?
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Posts in this topic
- JRehling   Europa PR   Dec 20 2007, 09:26 PM
- - volcanopele   Bah, blatent Europan propaganda It's all r...   Dec 20 2007, 09:58 PM
|- - nprev   QUOTE (volcanopele @ Dec 20 2007, 01:58 P...   Dec 20 2007, 10:17 PM
|- - Mariner9   QUOTE (volcanopele @ Dec 20 2007, 01:58 P...   Dec 21 2007, 09:23 PM
- - Decepticon   Excellent! Thin all the way baby!   Dec 20 2007, 10:08 PM
|- - ugordan   QUOTE (Decepticon @ Dec 20 2007, 11:08 PM...   Dec 20 2007, 10:10 PM
- - dvandorn   Io is just a whole order of magnitude more difficu...   Dec 21 2007, 09:46 PM
|- - Mariner9   QUOTE (dvandorn @ Dec 21 2007, 01:46 PM) ...   Dec 22 2007, 02:45 AM
|- - vjkane   QUOTE (Mariner9 @ Dec 22 2007, 02:45 AM) ...   Dec 22 2007, 04:54 PM
- - volcanopele   No you just have a Jupiter orbiter make repeated f...   Dec 21 2007, 09:55 PM
- - nprev   ...VP, you stick to your guns no matter what!...   Dec 21 2007, 10:03 PM
- - JRehling   Incidentally, I think on the first one, they got t...   Dec 21 2007, 11:12 PM
|- - vexgizmo   QUOTE (JRehling @ Dec 21 2007, 05:12 PM) ...   Feb 10 2008, 04:45 PM
|- - JRehling   QUOTE (vexgizmo @ Feb 10 2008, 08:45 AM) ...   Feb 11 2008, 06:34 PM
- - Mariner9   vjkane - Well stated, and I don't disagree wit...   Dec 23 2007, 12:00 AM
|- - vjkane   QUOTE (Mariner9 @ Dec 23 2007, 12:00 AM) ...   Dec 23 2007, 03:23 AM
- - DrShank   sorry to disappoint you thin-skinned, er i mean th...   Jan 11 2008, 03:33 AM
- - Greg Hullender   Any thoughts as to what the minimum thickness migh...   Jan 11 2008, 04:09 AM
|- - rlorenz   QUOTE (Greg Hullender @ Jan 10 2008, 11:0...   Jan 11 2008, 03:57 PM
|- - JRehling   Ice will not sustain major deviations in thickness...   Jan 12 2008, 07:57 AM
- - belleraphon1   NASA Hosting Science Update about Jupiter's Ic...   Nov 15 2011, 09:45 PM
- - antipode   Lets see, no current assets in Jupiter space, so t...   Nov 16 2011, 03:51 AM
- - nprev   I'm not reading this as a brief on new results...   Nov 16 2011, 05:06 AM
- - DrShank   Getting at the ice shell thickness has been a real...   Nov 16 2011, 06:16 PM
- - belleraphon1   Really is a conundrum... to me. I just wonder how ...   Nov 16 2011, 06:37 PM
|- - DrShank   agreed. the new model and even the diapir model r...   Nov 16 2011, 06:51 PM
- - belleraphon1   So we are still talking plumes of warm ice... even...   Nov 16 2011, 06:58 PM
|- - DrShank   its a difficult concept even for me, but the risin...   Nov 16 2011, 07:02 PM
|- - belleraphon1   Interesting. And I guess there are chemical condis...   Nov 16 2011, 07:13 PM
- - Paolo   for the lucky few having access to Nature, the pap...   Nov 16 2011, 07:14 PM
|- - ngunn   QUOTE (Paolo @ Nov 16 2011, 07:14 PM) the...   Nov 16 2011, 07:49 PM
- - stevesliva   Again reminds me of sandstone over salt domes. Th...   Nov 16 2011, 08:31 PM
- - stevesliva   Article at NASA here links to larger versions of t...   Nov 17 2011, 01:22 AM
- - antipode   Okay, I have a question (it may be dealt with in t...   Nov 18 2011, 02:55 AM
- - elakdawalla   They don't mention cycloids at all in the pape...   Nov 18 2011, 02:57 AM
- - Juramike   (Don't think they are tholins, more likely sal...   Nov 18 2011, 02:58 AM
|- - antipode   QUOTE (Juramike @ Nov 18 2011, 01:28 PM) ...   Nov 18 2011, 04:00 AM
|- - Juramike   QUOTE (antipode @ Nov 17 2011, 11:00 PM) ...   Nov 18 2011, 12:03 PM
- - Explorer1   Just a quick related question; how much do we know...   Nov 18 2011, 07:05 AM
|- - Gsnorgathon   QUOTE (Explorer1 @ Nov 17 2011, 11:05 PM)...   Nov 18 2011, 03:26 PM
|- - eoincampbell   QUOTE (Gsnorgathon @ Nov 18 2011, 08:26 A...   Nov 18 2011, 03:38 PM
- - Phil Stooke   "But how are the purported "shallow lake...   Nov 18 2011, 03:46 PM
- - Floyd   The Nature article is quite nice (I'm one of t...   Nov 29 2011, 10:16 PM
- - Phil Stooke   There is nothing comparable on Enceladus. Totally...   Nov 29 2011, 11:06 PM
- - MarcF   Some new stuff from Europa: "Based on new dat...   Mar 9 2013, 04:02 PM
- - stevesliva   http://www.mikebrownsplanets.com/2013/03/s...alt-p...   Mar 9 2013, 04:56 PM
- - MarcF   Really nice explanations from Mike Brown ! BTW...   Mar 9 2013, 06:54 PM
- - MarcF   I just heard about the Europa Clipper mission: htt...   Mar 13 2013, 09:52 PM
- - MarcF   Where are the Best Windows Into Europa's Inter...   May 9 2013, 10:44 AM


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