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New Horizons at Europa |
| Guest_AlexBlackwell_* |
 Feb 27 2007, 09:31 PM
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#1
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Guests  |
Time to start a thread about a far more interesting jovian moon
 Passing probe to study 'crop circles' on Europa 17:38 27 February 2007 NewScientist.com news service Kelly Young |
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Mar 4 2007, 02:17 AM
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#2
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 Senior Member  Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
I speculate that Europa simply cannot be emitting anything more than a tiny fraction of the mass that Enceladus is emitting (if any at all), or else the Voyagers and Galileo would have observed the ring/torus of particles that such outgassing would create. Assuming, of course, that geysers on Europa would propel particles fast enough to escape its gravity and form a ring in the first place...
But, I mean, really -- the smoke ring created by Enceladus is noticeable enough that, if there was such a ring at Europa's orbit, it would have been discovered by now (as, for example, the sulphur torus at Io's orbit was discovered fairly early on). -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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AlexBlackwell New Horizons at Europa Feb 27 2007, 09:31 PM
ugordan As mentioned in the general NH at Jupiter thread, ... Feb 28 2007, 12:58 PM AlexBlackwell Thanks, Gordan. Now we're getting somewhere... Feb 28 2007, 04:10 PM
Bjorn Jonsson QUOTE (ugordan @ Feb 28 2007, 12:58 PM) A... Feb 28 2007, 09:01 PM J.J. QUOTE (Bjorn Jonsson @ Feb 28 2007, 03:01... Feb 28 2007, 09:29 PM AlexBlackwell QUOTE (Bjorn Jonsson @ Feb 28 2007, 11:01... Feb 28 2007, 09:52 PM SFJCody QUOTE (AlexBlackwell @ Feb 28 2007, 09:52... Feb 28 2007, 10:28 PM JRehling QUOTE (Bjorn Jonsson @ Feb 28 2007, 01:01... Feb 28 2007, 10:51 PM JRehling The NH snap of Europa has similar geometry to the ... Mar 1 2007, 05:46 PM djellison Several "Oh woe is me" posts in this thr... Mar 1 2007, 04:46 PM mgrodzki i know there is much more to come when NH turns to... Mar 3 2007, 03:55 AM stevesliva QUOTE (mgrodzki @ Mar 2 2007, 10:55 PM) b... Mar 3 2007, 04:37 AM nprev Hmm...Actually, that's a very good question, M... Mar 3 2007, 04:35 AM mgrodzki that seems pretty meaty for a quick swing. most ex... Mar 3 2007, 01:42 PM nprev QUOTE (mgrodzki @ Mar 3 2007, 05:42 AM) m... Mar 3 2007, 03:01 PM MarcF New Horizons is also supposed to map the intriguin... Mar 3 2007, 02:13 PM Decepticon QUOTE the sulphur torus at Io's orbit was disc... Mar 4 2007, 04:23 AM dvandorn Voyager flybys, as I recall. I'm just thinkin... Mar 4 2007, 05:29 AM scalbers QUOTE (Decepticon @ Mar 4 2007, 04:23 AM)... Mar 4 2007, 03:33 PM edstrick Somebody do the arithmetic...
What is the escape ... Mar 4 2007, 08:40 AM helvick Surface escape speed at Enceladus ~ 239 m/sec.
Sur... Mar 4 2007, 10:11 AM mgrodzki QUOTE (helvick @ Mar 4 2007, 05:11 AM) I ... Mar 4 2007, 02:29 PM helvick QUOTE (mgrodzki @ Mar 4 2007, 02:29 PM) i... Mar 4 2007, 07:24 PM nprev Actually, IIRC, the Io torus, Saturn's E-ring,... Mar 4 2007, 03:40 PM vexgizmo QUOTE (nprev @ Mar 4 2007, 08:40 AM) The ... Mar 4 2007, 05:26 PM nprev Ho, ho!!! VERY interesting, Vexgizmo, ... Mar 4 2007, 07:30 PM helvick Well they seem pretty certain that Jovian environm... Mar 4 2007, 09:23 PM nprev Mmm...yeah, probably. Still, I remember that Io... Mar 4 2007, 09:51 PM tim cassidy On comparing Enceladus and Io:
The torus of partic... Mar 5 2007, 05:00 PM elakdawalla There's now 7 separate Europa observations up ... Mar 29 2007, 09:58 PM volcanopele Very cool, Emily. Going off your idea, I've c... Mar 30 2007, 05:40 AM alan QUOTE (volcanopele @ Mar 30 2007, 12:40 A... Mar 30 2007, 07:42 AM ugordan QUOTE (volcanopele @ Mar 30 2007, 06:40 A... Mar 30 2007, 08:47 AM elakdawalla QUOTE (volcanopele @ Mar 29 2007, 10:40 P... Mar 30 2007, 02:44 PM john_s I think we'll need to subtract out the albedo ... Mar 30 2007, 04:00 PM ugordan QUOTE (john_s @ Mar 30 2007, 05:00 PM) I ... Mar 30 2007, 05:40 PM Phil Stooke This image is a comparison between a NH image of E... Apr 2 2007, 12:57 PM punkboi New image of Io and Europa next to each other in M... Apr 2 2007, 05:59 PM John Flushing RE: New Horizons at Europa Apr 2 2007, 06:06 PM ugordan Beautiful!
QUOTE This particular scene was su... Apr 2 2007, 06:08 PM helvick And a shout out to Hendric too in the comments, th... Apr 2 2007, 06:10 PM John Flushing QUOTE (helvick @ April 2nd 2007, 02:10 PM... May 2 2007, 12:52 AM paxdan Kudos to hendric and kudos to the new horizon team... Apr 2 2007, 06:24 PM hendric Ah man, I didn't do anything except run a few ... Apr 2 2007, 09:13 PM djellison Major major kudos to Alan, John and Space Enthusia... Apr 2 2007, 09:35 PM JRehling QUOTE (djellison @ Apr 2 2007, 02:35 PM) ... Apr 2 2007, 09:50 PM john_s Yes, thanks to Doug, UMSF and Hendric in particula... Apr 3 2007, 04:08 AM martin peters QUOTE (john_s @ Apr 3 2007, 04:08 AM) Esp... Apr 3 2007, 06:19 AM |
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