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Death of a Spacecraft: The Unknown Fate of Cassini, Decision on Cassini's fate |
Nov 8 2006, 12:23 PM
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![]() Member ![]() ![]() ![]() Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
Death of a Spacecraft: The Unknown Fate of Cassini
http://space.com/businesstechnology/061108_cassini_fate.html I like the Cassini Mercury crash option, even if unlikely. Rakhir |
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Nov 8 2006, 12:42 PM
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#2
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3652 Joined: 1-October 05 From: Croatia Member No.: 523 |
Yikes Rakhir, you should choose topic titles more carefully, this gave me the creeps!
About the article... Sheesh, Cassini's only halfway through the primary mission and people are already thinking of how to dispose of it. Seems a bit morbid. Smashing it into Jupiter? Mercury? Seriously? I fail to see the need of impacting Jupiter if you exit the Saturnian system. Once you do that, it'll likely be decades before you even get a chance to get close to Saturn again. I'd rather do another close flyby of Jupiter to do some useful science. Not that it's very likely to happen, though. How plausible would it be for Titan to be able to launch Cassini on a Hohmann transfer to Jupiter anyway? Seems like a waste of Titan flybys for sub-optimal flyby trajectories just to eject Cassini out of the Saturnian system. If you're gonna eject it anyway, the Mercury impact seems like a much better idea, given the enormous mass of Cassini (some 2 tons dry weight) plus a very substantial impact speed a trajectory coming in from beyond Jupiter would be. That would excavate one heck of a crater. Plus you get to to some Jupiter science beforehand. Here's hoping that by that time (say late next decade) we'll have something in Jovian orbit again and Cassini could wave goodbye, just like it did to Galileo. -------------------- |
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Nov 8 2006, 01:05 PM
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#3
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![]() Member ![]() ![]() ![]() Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
Yikes Rakhir, you should choose topic titles more carefully, this gave me the creeps! Indeed, Ugordan, my heart missed a beat when I read the title of this article. In addition of the Jupiter fly-by, maybe other fly-bys of inner planets or asteroids would be possible during the trip . Avoiding of course the Earth because of RTGs. |
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Nov 8 2006, 07:04 PM
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#4
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Junior Member ![]() ![]() Group: Members Posts: 73 Joined: 14-June 05 From: Cambridge, MA Member No.: 411 |
Indeed, Ugordan, my heart missed a beat when I read the title of this article. In addition of the Jupiter fly-by, maybe other fly-bys of inner planets or asteroids would be possible during the trip . Avoiding of course the Earth because of RTGs. Actually, Rakhir, you had the story right - just the wrong spacecraft: http://www.jpl.nasa.gov/news/features.cfm?feature=1226 - John Sheff Cambridge, MA |
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Rakhir Death of a Spacecraft: The Unknown Fate of Cassini Nov 8 2006, 12:23 PM
ugordan You're not suggesting MGS is dead, are you? Nov 8 2006, 07:21 PM
jsheff QUOTE (ugordan @ Nov 8 2006, 02:21 PM) Yo... Nov 8 2006, 07:46 PM
ugordan I wouldn't write MGS off just yet. This is ... Nov 8 2006, 07:52 PM
jsheff QUOTE (Rakhir @ Nov 8 2006, 07:23 AM) Dea... Nov 8 2006, 07:34 PM
Mariner9 It's been a long time since I got that A+ in O... Nov 8 2006, 09:47 PM
Big_Gazza Does anyone seriously consider the possibility of ... Nov 9 2006, 12:07 AM
Stephen QUOTE (Big_Gazza @ Nov 9 2006, 11:07 AM) ... Nov 9 2006, 01:55 AM

ugordan Since Huygens wasn't sterilized, I can't s... Nov 9 2006, 08:01 AM

Jim from NSF.com QUOTE (ugordan @ Nov 9 2006, 03:01 AM) Si... Nov 9 2006, 02:47 PM

ugordan Huygens had 35 approximately 1 Watt radioisotope h... Nov 9 2006, 03:04 PM
JRehling QUOTE (Big_Gazza @ Nov 8 2006, 04:07 PM) ... Nov 9 2006, 03:45 PM
tasp Let's go to Chiron! Nov 9 2006, 03:03 PM
stevesliva QUOTE (tasp @ Nov 9 2006, 10:03 AM) Let... Nov 9 2006, 07:09 PM
Ant103 Maybe it's unprobable but, they can put Cassin... Nov 10 2006, 10:41 AM
djellison No......it can use gravity assists to try and get ... Nov 10 2006, 12:38 PM
ugordan What I'd like to know is how plausible these S... Nov 10 2006, 12:50 PM
volcanopele QUOTE (ugordan @ Nov 10 2006, 05:50 AM) W... Nov 10 2006, 03:46 PM
nprev Gotta admit, I like the Saturn system escape optio... Nov 10 2006, 03:04 PM
Bjorn Jonsson QUOTE (nprev @ Nov 10 2006, 03:04 PM) Got... Nov 10 2006, 04:03 PM
JRehling QUOTE (nprev @ Nov 10 2006, 07:04 AM) Got... Nov 10 2006, 05:47 PM
nprev ...okay, well that's that, then. I'll be l... Nov 10 2006, 03:51 PM
nprev Actually, I agree, Bjorn. However, wasn't ther... Nov 10 2006, 04:32 PM
ugordan QUOTE (nprev @ Nov 10 2006, 05:32 PM) Wou... Nov 10 2006, 04:46 PM
Stephen QUOTE (nprev @ Nov 11 2006, 03:32 AM) Wou... Nov 15 2006, 01:26 AM
nprev QUOTE (Stephen @ Nov 14 2006, 05:26 PM) W... Nov 15 2006, 01:42 AM
Sunspot I sure i remember Cassini manager Bob Mitchell tal... Nov 10 2006, 04:42 PM
nprev Thanks, UG...I understand the situation much bette... Nov 10 2006, 05:02 PM
Myran I am afraid that volcanopele most likely are right... Nov 10 2006, 07:34 PM
Greg Hullender I've been impressed by Martin Lo's work on... Nov 10 2006, 10:00 PM
tedstryk I think a big difference between Galileo and Cassi... Nov 10 2006, 10:10 PM
ugordan Yeah, but Cassini needs to turn the HGA to Earth f... Nov 10 2006, 10:25 PM
stellarlight Some questions:
Although it seems fascinating to ... Nov 13 2006, 04:24 PM
ugordan 1. The RTGs should last for a while. Radioisotopes... Nov 13 2006, 04:33 PM
JRehling QUOTE (stellarlight @ Nov 13 2006, 08:24 ... Nov 13 2006, 04:36 PM
stevesliva QUOTE (JRehling @ Nov 13 2006, 11:36 AM) ... Nov 13 2006, 06:02 PM

ugordan Just to give an example of just how hard it is to ... Nov 13 2006, 06:53 PM
mchan QUOTE (JRehling @ Nov 13 2006, 08:36 AM) ... Nov 14 2006, 10:41 AM
TritonAntares QUOTE (JRehling @ Nov 13 2006, 05:36 PM) ... Nov 14 2006, 11:50 PM
djellison You need the Encounter MFD
http://www.orbitermar... Nov 13 2006, 08:32 PM
ugordan Hm... and I thought TransX was the advanced one ou... Nov 13 2006, 08:36 PM
djellison Trans X is all a bit complicated for me - the Enco... Nov 13 2006, 08:39 PM
ugordan Yes, it's complicated and has a convoluted int... Nov 13 2006, 08:47 PM
nprev Sounds interesting to me too, TritonAntares. Speak... Nov 15 2006, 12:14 AM
rogelio Why dispose of Cassini as if it were some embarras... Nov 15 2006, 12:59 AM
Rakhir QUOTE (rogelio @ Nov 15 2006, 03:59 AM) W... Nov 15 2006, 08:51 AM
nprev I appreciate your sentiments, but I'm actually... Nov 15 2006, 01:34 AM
edstrick Something I don't know but would like to... If... Nov 15 2006, 10:16 AM
djellison If one is truely worried about contaminating Enc o... Nov 15 2006, 10:28 AM
Big_Gazza QUOTE (Rakhir @ Nov 15 2006, 07:51 PM) RT... Nov 15 2006, 10:53 AM
ugordan Not to mention the impact speed at Enceladus would... Nov 15 2006, 11:41 AM
Rakhir QUOTE (Big_Gazza @ Nov 15 2006, 01:53 PM)... Nov 15 2006, 11:51 AM
dvandorn I will point out that the Apollo 13 situation isn... Nov 16 2006, 03:23 AM
Greg Hullender QUOTE (dvandorn @ Nov 15 2006, 07:23 PM) ... Nov 16 2006, 04:15 AM
helvick QUOTE (Greg Hullender @ Nov 16 2006, 04:1... Nov 16 2006, 12:37 PM
Rakhir QUOTE (Greg Hullender @ Nov 16 2006, 07:1... Nov 16 2006, 01:55 PM
dilo Only now I realized that, if they smash Cassini on... Nov 19 2006, 05:38 PM
stevesliva QUOTE (Rakhir @ Nov 16 2006, 08:55 AM) Ju... Nov 20 2006, 04:20 PM
nprev Hmm...Maybe the answer is a highly elliptical orbi... Nov 16 2006, 03:41 AM![]() ![]() |
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