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Cassini's Extended-Extended Mission, July 2010-June 2017
volcanopele
post Feb 6 2009, 03:35 AM
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Perhaps now would be a good time to start a new thread on the Extended-Extended Mission.

http://www.space.com/news/090127-cassini-m...-extension.html
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jasedm
post Jan 27 2010, 05:33 PM
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Oh it will surely happen - there's the definitive proof of the Rhea rings to confirm yet, the further radar coverage of Titan, the incomparable PR generated by the 'proximal orbits' and so on.
A saturn orbiter is surely priceless.
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ugordan
post Jan 27 2010, 05:56 PM
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QUOTE (jasedm @ Jan 27 2010, 06:33 PM) *
there's the definitive proof of the Rhea rings to confirm yet

There's nothing to confirm just yet. There is no discovery, only tantalizing hints and from what I've seen in various ISS observations apparently targeted at imaging the rings, that's going to be a very tough nut to crack. Not sure how other instruments would be able to nail the case. Would RADAR be able to get any reflection from a few boulders some thousands of km away?


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tedstryk
post Jan 27 2010, 07:33 PM
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The evidence is from particle and fields data (MIMI), not ISS. There is something there, the question is what that something is.


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ugordan
post Jan 27 2010, 08:31 PM
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I realize where the claim comes from. Didn't the same instrument pick up hints of activity on Dione? Highly suggestive and tantalizing stuff, but I wouldn't exactly call it evidence by itself. Yes, there definitely appears to be something there around Rhea, but we have no proof it's rings, hence my comment about confirmation with other instruments.


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ynyralmaen
post Jan 27 2010, 09:19 PM
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The broad electron depletion seen by MIMI in 2005 can apparently be explained by a broad disk of debris orbiting Rhea; further narrow dropouts on either side of the moon suggested that discrete rings could be embedded in a more diffuse disk. CAPS also saw a similar broad decrease during a more distant flyby in 2007; both the flybys were downstream, so not providing the full picture of the plasma-moon/debris interaction. The next close Rhea flyby's little over a month away on March 2nd; inbound slightly downstream of Rhea in the plasma flow, outbound slightly upstream - maybe we'll get a better picture of what's going on there from those observations.

Hints of activity at Dione came from the magnetometer data, and some have interpreted features seen by CAPS as being signs of plasma release at Dione and Tethys.
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Posts in this topic
- volcanopele   Cassini's Extended-Extended Mission   Feb 6 2009, 03:35 AM
- - brellis   One hopes the thruster swap doesn't affect any...   Feb 6 2009, 05:28 AM
- - Juramike   Wait....what? (from space.com article) "such...   Feb 6 2009, 03:38 PM
- - volcanopele   VIMS may have detected photometric changes at Hote...   Feb 6 2009, 05:26 PM
- - Juramike   Ahhh, OK, I get it: The material when erupted wou...   Feb 6 2009, 06:01 PM
- - volcanopele   Of course, I didn't start this thread complete...   Feb 6 2009, 10:09 PM
- - ngunn   Does that mean that a tour has to be selected befo...   Feb 6 2009, 10:41 PM
- - volcanopele   Yes, I do know what the four candidates were. The...   Feb 6 2009, 10:56 PM
- - Greg Hullender   When I read about this last year http://www.lpi.u...   Feb 6 2009, 11:00 PM
|- - Byran   QUOTE (Greg Hullender @ Feb 7 2009, 05:30...   Mar 25 2009, 09:55 AM
|- - floron   QUOTE (Byran @ Mar 25 2009, 04:55 AM) htt...   Apr 23 2009, 10:40 PM
- - volcanopele   At this point we have JUST selected which tour we ...   Feb 6 2009, 11:03 PM
- - jsheff   Can you give us any highlights? Any Iapetus flybys...   Feb 7 2009, 01:50 AM
|- - stevesliva   QUOTE (jsheff @ Feb 6 2009, 09:50 PM) Can...   Feb 7 2009, 05:23 AM
||- - paxdan   QUOTE (stevesliva @ Feb 7 2009, 05:23 AM)...   Feb 24 2009, 09:44 PM
|- - volcanopele   QUOTE (jsheff @ Feb 6 2009, 06:50 PM) Can...   Feb 20 2009, 10:06 AM
|- - Greg Hullender   QUOTE (volcanopele @ Feb 20 2009, 02:06 A...   Feb 21 2009, 07:34 PM
|- - ugordan   QUOTE (volcanopele @ Feb 20 2009, 11:06 A...   Feb 21 2009, 09:34 PM
- - Mariner9   Twelve more close Enceladus encounters???? Oh jo...   Feb 20 2009, 04:50 PM
- - Byran   volcanopele, when publish the complete list of all...   Feb 21 2009, 10:27 AM
- - Del Palmer   From the latest Cassini Significant Events report:...   Feb 21 2009, 09:19 PM
|- - jasedm   QUOTE (Del Palmer @ Feb 21 2009, 10:19 PM...   Jun 27 2009, 11:55 AM
- - Hungry4info   A 12 km Enceladus flyby sounds nice =) (When do we...   Feb 21 2009, 10:00 PM
- - volcanopele   No, no, I meant that there are 12 encounters of En...   Feb 21 2009, 10:07 PM
|- - Hungry4info   QUOTE (volcanopele @ Feb 21 2009, 04:07 P...   Feb 21 2009, 10:18 PM
|- - ugordan   QUOTE (volcanopele @ Feb 21 2009, 11:07 P...   Feb 22 2009, 05:20 PM
|- - Byran   QUOTE (ugordan @ Feb 22 2009, 11:50 PM) h...   Feb 23 2009, 04:52 PM
- - dmuller   I found a website which lists 4 different scenario...   Feb 21 2009, 11:07 PM
|- - jasedm   QUOTE (dmuller @ Feb 21 2009, 11:07 PM) I...   Feb 22 2009, 09:52 AM
- - volcanopele   It was SM-7.   Feb 21 2009, 11:41 PM
- - ilbasso   Just heard Carolyn Porco speak at Spacefest this a...   Feb 22 2009, 01:16 AM
- - Greg Hullender   Is there something that indicates what sort of Tit...   Feb 22 2009, 05:12 PM
|- - dmuller   QUOTE (Greg Hullender @ Feb 23 2009, 04:1...   Feb 23 2009, 05:26 AM
- - volcanopele   Whoops...   Feb 23 2009, 05:54 AM
|- - stevesliva   QUOTE (volcanopele @ Feb 23 2009, 01:54 A...   Feb 23 2009, 04:14 PM
- - Floyd   Cassini having a very bad day   Feb 23 2009, 02:47 PM
- - djellison   Nothing unusual about that news release.   Feb 23 2009, 04:49 PM
- - Bjorn Jonsson   As previously discussed there are no targeted Hype...   Feb 23 2009, 07:28 PM
|- - Holder of the Two Leashes   QUOTE (volcanopele @ Feb 20 2009, 04:06 A...   Feb 24 2009, 06:51 PM
- - Mariner9   Any estimates available on annual cost of the XXM?...   Feb 24 2009, 04:32 AM
- - ngunn   Following the 'proximal' link I've jus...   Feb 24 2009, 10:17 PM
- - Holder of the Two Leashes   Clicked on the link Paxdan provided for the Planet...   Feb 24 2009, 10:24 PM
- - HughFromAlice   I've just read John Spencer's "Solist...   Feb 25 2009, 04:18 AM
- - ngunn   I know most people who come here keep an eye on TP...   Feb 25 2009, 09:32 PM
|- - Thu   QUOTE (ngunn @ Feb 26 2009, 04:32 AM) It...   Feb 26 2009, 01:06 PM
|- - ugordan   QUOTE (ngunn @ Feb 25 2009, 10:32 PM) It...   Feb 26 2009, 01:37 PM
- - remcook   Great write-up! In the (pretty) graphic repres...   Feb 26 2009, 06:28 PM
|- - HughFromAlice   QUOTE (remcook @ Feb 27 2009, 03:58 AM) G...   Feb 27 2009, 02:17 PM
- - ngunn   Anybody know when a decision is to be reached on t...   Jan 25 2010, 08:04 PM
|- - john_s   We hope to know more after the President's 201...   Jan 25 2010, 08:55 PM
|- - tharrison   QUOTE (john_s @ Jan 25 2010, 12:55 PM) We...   Jan 26 2010, 01:15 AM
- - jasedm   Oh it will surely happen - there's the definit...   Jan 27 2010, 05:33 PM
|- - ugordan   QUOTE (jasedm @ Jan 27 2010, 06:33 PM) th...   Jan 27 2010, 05:56 PM
|- - tedstryk   The evidence is from particle and fields data (MIM...   Jan 27 2010, 07:33 PM
|- - ugordan   I realize where the claim comes from. Didn't t...   Jan 27 2010, 08:31 PM
|- - ynyralmaen   The broad electron depletion seen by MIMI in 2005 ...   Jan 27 2010, 09:19 PM
- - Elias   The magnetometer did not actually pick up hints of...   Jan 28 2010, 12:17 AM
|- - volcanopele   QUOTE (Elias @ Jan 27 2010, 05:17 PM) One...   Jan 28 2010, 12:23 AM
- - Ron Hobbs   Did I miss something? In the 1/27 press release o...   Jan 30 2010, 05:52 AM
- - Phil Stooke   Isn't solstice what we're in now? Phil   Jan 31 2010, 05:14 PM
|- - volcanopele   No, we are still in the Equinox mission until July...   Jan 31 2010, 05:39 PM
- - Ron Hobbs   I thought we were still in the Equinox Mission, at...   Jan 31 2010, 05:43 PM
- - Phil Stooke   "No, we are still in the Equinox mission unti...   Jan 31 2010, 06:02 PM
- - ngunn   Do you think we can construe 'continues operat...   Feb 1 2010, 10:08 PM
- - Greg Hullender   Oh I think they'll approve it. The cheapest ki...   Feb 2 2010, 01:49 AM
- - volcanopele   Now it's official and approved ht...   Feb 3 2010, 08:23 PM
|- - ugordan   w00t!!!   Feb 3 2010, 08:29 PM
- - djellison   2017 baby   Feb 3 2010, 08:31 PM
- - machi   Finally!   Feb 3 2010, 08:34 PM
- - volcanopele   The only sad part, you can now mark on your calend...   Feb 3 2010, 08:34 PM
|- - ugordan   QUOTE (volcanopele @ Feb 3 2010, 09:34 PM...   Feb 3 2010, 08:37 PM
|- - SFJCody   QUOTE (volcanopele @ Feb 3 2010, 08:34 PM...   Feb 3 2010, 08:51 PM
||- - john_s   Hey- I did that too! John   Feb 3 2010, 09:02 PM
||- - canis_minor   Beware the ides of September....   Feb 3 2010, 09:06 PM
||- - SFJCody   QUOTE (john_s @ Feb 3 2010, 09:02 PM) Hey...   Feb 3 2010, 09:11 PM
|- - Ron Hobbs   [quote name='volcanopele' date='Feb 3 ...   Feb 3 2010, 11:09 PM
- - volcanopele   Wow, I should do the same thing. I built my paper...   Feb 3 2010, 08:57 PM
|- - SFJCody   QUOTE (volcanopele @ Feb 3 2010, 08:57 PM...   Feb 3 2010, 09:00 PM
- - volcanopele   Quite right, there are quite a few great things be...   Feb 3 2010, 11:17 PM
|- - ugordan   To put it into perspective, Cassini's mission ...   Feb 3 2010, 11:29 PM
- - dmuller   Updated my realtime simulation with the good news...   Feb 4 2010, 01:57 AM
- - volcanopele   I use ftp://naif.jpl.nasa.gov/pub/naif/CASSINI/......   Feb 4 2010, 03:13 AM
|- - dmuller   QUOTE (volcanopele @ Feb 4 2010, 02:13 PM...   Feb 4 2010, 03:31 AM
- - remcook   Yay! Bring on those seasonal variations!   Feb 4 2010, 09:23 AM
|- - MahFL   Awesome, 7 years.   Feb 4 2010, 11:25 AM
- - belleraphon1   AWESOMNESS PLUS!!!!!! Wil...   Feb 4 2010, 01:00 PM
|- - ynyralmaen   Fantastic news, but bittersweet for some... Poste...   Feb 4 2010, 01:16 PM
|- - MahFL   Oh no....I just read they are to plunge Cassini in...   Feb 4 2010, 01:41 PM
- - djellison   To co-incide with the exhaustion of spacecraft con...   Feb 4 2010, 02:00 PM
|- - ugordan   People just have to realize orbiters doing orbital...   Feb 4 2010, 02:23 PM
- - ngunn   A generous lifespan - an immortal legacy - what mo...   Feb 4 2010, 02:25 PM
- - Hungry4info   Definitely! I'm excited about the news...   Feb 4 2010, 02:49 PM
|- - Juramike   QUOTE (Hungry4info @ Feb 4 2010, 09:49 AM...   Feb 4 2010, 03:08 PM
- - Decepticon   Are there any close or non targeted flybys of Hype...   Feb 4 2010, 09:26 PM
|- - Bjorn Jonsson   QUOTE (Decepticon @ Feb 4 2010, 09:26 PM)...   Feb 4 2010, 10:58 PM
|- - Tom Tamlyn   Some questions about Cassini's final maneuvers...   Feb 4 2010, 11:51 PM
|- - dmuller   QUOTE (Bjorn Jonsson @ Feb 5 2010, 09:58 ...   Feb 5 2010, 12:16 AM
- - john_s   That's a purely gravitational nudge from Titan...   Feb 5 2010, 12:14 AM
- - Tom Tamlyn   Some more questions about Cassini's final plun...   Feb 5 2010, 05:44 AM
- - NickF   I've also wondered about the question Tom rais...   Feb 5 2010, 10:02 AM
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