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Hayabusa Post-Landing & Science Results
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post Jun 17 2010, 02:41 AM
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The capsule began its return to Japan a few moments ago as I write this. Seems like a good time to start a new topic for the much-anticipated final results of this epic mission.


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post Jul 6 2010, 02:39 AM
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Pandaneko, don't be too distressed. In English-speaking countries at least, we're quite used to media confusion & inaccuracy in scientific matters. (This appears to be rather common in other non-English Western countries as well from what I gather).

It's therefore perhaps not too surprising that you may be seeing something similar in the mass Japanese media outlets concerning Hayabusa's findings.

Personally, I would have been surprised if the researchers had assumed that all exterior particles (within the reentry capsule but outside the sample container) were of terrestrial origin. After prolonged contact with Itokawa, it seems quite possible that a few dust particles from the asteroid might adhere to the capsule.


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pandaneko
post Jul 6 2010, 09:03 AM
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QUOTE (nprev @ Jul 6 2010, 11:39 AM) *
Personally, I would have been surprised if the researchers had assumed that all exterior particles (within the reentry capsule but outside the sample container) were of terrestrial origin. After prolonged contact with Itokawa, it seems quite possible that a few dust particles from the asteroid might adhere to the capsule.


I quite agree with you, actually. My gut feeling now is that all of the grains so far found are from Itokawa, because

1. Post-landing cleaning of the cannister, I cannot imagine that they did not do similar cleaning before launch.

2. The capsule came down by parachute. It must have been a gentle landing.

3. All newspaper reports so far say that all the sealings were found closed when the whole thing was brought into the curation room. How can Earth origin particles, no matter how small, could have got into the sealed system.

How exactly sealed, I do not know, of course. I had not even thought about the mechanism because I never thought it will come back.

4. I was not there to witness the landing on Itokawa, but from the CG I did see an extremely violent reverse shower due to retro firing and the escape velocity out there must be extremely small. On Earth, can you imagine 1 mm size particles, somehow, wiggling into the sealed system against gravity?

5. Can you also imagine that the team, when assembling the capsule, did not notice naked-eye visible grains on the outer surface of the inner tube? It is only a small tube, after all. And, you knew how small Itokawa grains could be when captured into the inner tube.

Pandaneko





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Leither
post Jul 6 2010, 12:19 PM
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BBC web page now showing JAXA picture of particles inside the container.

http://news.bbc.co.uk/2/hi/science_and_env...nt/10519895.stm

No doubt they are being ultra cautious as to their origin, but.......
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Posts in this topic
- nprev   Hayabusa Post-Landing & Science Results   Jun 17 2010, 02:41 AM
- - Hungry4info   Here's for hoping the capsule does indeed cont...   Jun 17 2010, 04:23 AM
|- - pandaneko   QUOTE (Hungry4info @ Jun 17 2010, 01:23 P...   Jun 19 2010, 09:26 AM
|- - ElkGroveDan   Do you have a link for that information Pandaneko?   Jun 19 2010, 07:00 PM
|- - pandaneko   QUOTE (ElkGroveDan @ Jun 20 2010, 04:00 A...   Jun 20 2010, 08:44 AM
- - nprev   Perhaps this is unduly optimistic, but I think tha...   Jun 17 2010, 12:41 PM
- - eoincampbell   The team are confident. Is that the end of the sam...   Jun 17 2010, 08:56 PM
- - djellison   Plus, What's the November reference? The EPOXI...   Jun 19 2010, 07:14 PM
|- - pandaneko   QUOTE (djellison @ Jun 20 2010, 04:14 AM)...   Jun 20 2010, 08:54 AM
- - nprev   Pandaneko, I'm not aware of any approved NASA ...   Jun 20 2010, 10:22 AM
|- - pandaneko   QUOTE (nprev @ Jun 20 2010, 07:22 PM) Pan...   Jun 20 2010, 02:59 PM
|- - djellison   QUOTE (nprev @ Jun 20 2010, 02:22 AM) Pan...   Jun 20 2010, 03:18 PM
- - nprev   Here's a Bing translation of the Ashai article...   Jun 20 2010, 07:01 PM
- - vjkane   Here is a link to the late Bruce Moomaw's desc...   Jun 20 2010, 08:01 PM
- - nprev   Short Aviation Week article today. Highlight: It m...   Jun 22 2010, 03:57 AM
|- - pandaneko   QUOTE (nprev @ Jun 22 2010, 12:57 PM) Sho...   Jun 22 2010, 08:33 AM
|- - pandaneko   QUOTE (pandaneko @ Jun 22 2010, 05:33 PM)...   Jun 24 2010, 09:13 AM
|- - pandaneko   QUOTE (pandaneko @ Jun 24 2010, 06:13 PM)...   Jun 25 2010, 09:41 AM
|- - Hungry4info   QUOTE (pandaneko @ Jun 25 2010, 04:41 AM)...   Jun 25 2010, 05:37 PM
- - djellison   Points 2 is heading toward the area of rule 1.2. ...   Jun 22 2010, 01:17 PM
|- - pandaneko   QUOTE (djellison @ Jun 22 2010, 10:17 PM)...   Jun 23 2010, 08:09 AM
|- - ElkGroveDan   You're OK pandaneko. To clarify, the ban on...   Jun 23 2010, 02:41 PM
|- - pandaneko   Dear administrators Thanks, I am relieved and I w...   Jun 24 2010, 09:02 AM
|- - pandaneko   QUOTE (ElkGroveDan @ Jun 23 2010, 11:41 P...   Jun 26 2010, 09:40 AM
- - ilbasso   Point 3, the distance from target, is absolutely i...   Jun 22 2010, 07:47 PM
- - nprev   Well said. The landing precision is especially imp...   Jun 22 2010, 10:07 PM
- - Juramike   QUOTE ...organic materials on such a tiny body lik...   Jun 25 2010, 02:44 PM
|- - pandaneko   QUOTE (Juramike @ Jun 25 2010, 11:44 PM) ...   Jun 27 2010, 08:29 AM
- - pandaneko   What follows is based on my Google alert and it ha...   Jul 4 2010, 02:24 PM
|- - pandaneko   QUOTE (pandaneko @ Jul 4 2010, 11:24 PM) ...   Jul 4 2010, 11:25 PM
- - brellis   That's very exciting news! thanks pandanek...   Jul 4 2010, 11:56 PM
|- - pandaneko   QUOTE (brellis @ Jul 5 2010, 08:56 AM) Th...   Jul 5 2010, 12:01 AM
- - nprev   Wow!!! Exciting news indeed; thanks ve...   Jul 5 2010, 12:04 AM
|- - pandaneko   Apparently, initial measures they are taking are i...   Jul 5 2010, 01:23 AM
- - ElkGroveDan   If this turns out to be true and those are asteroi...   Jul 5 2010, 01:39 AM
- - nprev   We can only hope. "Epic" is the only wor...   Jul 5 2010, 01:53 AM
- - tasp   Amazing news! Hayabusa, the little spacecraft...   Jul 5 2010, 01:59 AM
|- - pandaneko   I had a quick look at JAXA web pages, no, none abl...   Jul 5 2010, 02:23 AM
|- - pandaneko   I had a quick look at all other major newspapers a...   Jul 5 2010, 02:37 AM
|- - pandaneko   QUOTE (pandaneko @ Jul 5 2010, 11:37 AM) ...   Jul 5 2010, 05:32 AM
|- - pandaneko   QUOTE (pandaneko @ Jul 5 2010, 02:32 PM) ...   Jul 5 2010, 08:53 AM
- - JimOberg   Post moved from Hayabusa Return to Earth thread - ...   Jul 5 2010, 04:37 AM
- - Hungry4info   pandaneko, you're doing fine. In fact, thank ...   Jul 5 2010, 10:41 AM
|- - ustrax   man...if this is true the question here is...who...   Jul 5 2010, 11:57 AM
|- - pandaneko   I am a bit more upset. Even more alarming news, th...   Jul 5 2010, 01:52 PM
|- - pandaneko   QUOTE (pandaneko @ Jul 5 2010, 10:52 PM) ...   Jul 5 2010, 02:42 PM
||- - pandaneko   QUOTE (pandaneko @ Jul 5 2010, 11:42 PM) ...   Jul 5 2010, 03:04 PM
|- - ElkGroveDan   QUOTE (pandaneko @ Jul 5 2010, 06:52 AM) ...   Jul 5 2010, 04:04 PM
- - Stu   Sorry, my fault; it rolled under my sofa while I w...   Jul 5 2010, 04:06 PM
|- - ElkGroveDan   The part where they lost the lid and decided to co...   Jul 5 2010, 04:19 PM
- - eoincampbell   I hope we can get an official statement soon... th...   Jul 5 2010, 08:47 PM
|- - pandaneko   QUOTE (eoincampbell @ Jul 6 2010, 05:47 A...   Jul 5 2010, 11:57 PM
|- - pandaneko   QUOTE (eoincampbell @ Jul 6 2010, 05:47 A...   Jul 6 2010, 02:20 AM
|- - pandaneko   2. http://www.yomiuri.co.jp/zoom/20100705-OYT9I00...   Jul 6 2010, 02:23 AM
- - nprev   Pandaneko, don't be too distressed. In English...   Jul 6 2010, 02:39 AM
|- - ElkGroveDan   Let's not forget that a significant number of ...   Jul 6 2010, 03:23 AM
|- - pandaneko   QUOTE (nprev @ Jul 6 2010, 11:39 AM) Pers...   Jul 6 2010, 09:03 AM
||- - Leither   BBC web page now showing JAXA picture of particles...   Jul 6 2010, 12:19 PM
|- - pandaneko   QUOTE (nprev @ Jul 6 2010, 11:39 AM) Pand...   Jul 6 2010, 12:30 PM
- - elakdawalla   Here's the [Google translated] link to the sou...   Jul 6 2010, 01:06 PM
|- - MahFL   Those grains look too big to have been missed befo...   Jul 6 2010, 02:08 PM
|- - pandaneko   QUOTE (MahFL @ Jul 6 2010, 11:08 PM) Thos...   Jul 6 2010, 03:47 PM
- - ElkGroveDan   I agree. I am growing optimistic now.   Jul 6 2010, 02:16 PM
|- - pandaneko   Futher reporting from the Mainichi newspaper here,...   Jul 7 2010, 10:17 AM
- - Stu   Sorry, for a moment there I actually thought you s...   Jul 7 2010, 11:15 AM
|- - pandaneko   QUOTE (Stu @ Jul 7 2010, 08:15 PM) ...   Jul 7 2010, 12:20 PM
||- - pandaneko   Other newspapers are starting to carry similar sto...   Jul 7 2010, 01:26 PM
||- - amezz   QUOTE (pandaneko @ Jul 7 2010, 05:26 PM) ...   Jul 7 2010, 01:49 PM
|||- - pandaneko   QUOTE (amezz @ Jul 7 2010, 10:49 PM) Dear...   Jul 7 2010, 02:34 PM
||||- - amezz   QUOTE (pandaneko @ Jul 7 2010, 06:34 PM) ...   Jul 8 2010, 07:19 AM
|||- - pandaneko   QUOTE (amezz @ Jul 7 2010, 10:49 PM) Dear...   Jul 8 2010, 10:17 AM
|||- - pandaneko   Here below is the URL to what one newspaper report...   Jul 8 2010, 11:01 AM
|||- - pandaneko   QUOTE (pandaneko @ Jul 8 2010, 08:01 PM) ...   Jul 8 2010, 12:05 PM
||- - Leither   QUOTE (pandaneko @ Jul 7 2010, 02:26 PM) ...   Jul 7 2010, 09:51 PM
||- - mars loon   The finding of dust inside is very exciting and a ...   Jul 7 2010, 11:36 PM
|||- - pandaneko   According to today's Asahi Shimbun newspaper (...   Jul 8 2010, 12:02 AM
||- - pandaneko   QUOTE (Leither @ Jul 8 2010, 06:51 AM) Wh...   Jul 8 2010, 09:33 AM
|- - ElkGroveDan   QUOTE (Stu @ Jul 7 2010, 04:15 AM) ...   Jul 7 2010, 02:25 PM
- - elakdawalla   One assumes it was a very special spatula. Presum...   Jul 7 2010, 01:56 PM
|- - AndyG   QUOTE (elakdawalla @ Jul 7 2010, 02:56 PM...   Jul 7 2010, 03:03 PM
- - djellison   Who wrote 'Don't bother ... Doug' It ...   Jul 7 2010, 03:06 PM
- - tasp   IIRC, during daylight hours on the earth's moo...   Jul 7 2010, 03:09 PM
- - Hungry4info   Good question. IIRC, the haze on the moon isn...   Jul 7 2010, 03:21 PM
- - Ipparchus   I saw that photo of the sample container and I can...   Jul 7 2010, 03:21 PM
|- - pandaneko   QUOTE (Ipparchus @ Jul 8 2010, 12:21 AM) ...   Jul 8 2010, 09:40 AM
- - MaDeR   Nothing like suspense IN SPACE! Do these grain...   Jul 7 2010, 04:32 PM
- - Stu   Pandanenko, Just wanted to say thanks for the exc...   Jul 8 2010, 05:21 AM
- - eoincampbell   Pandaneko has provided a wonderfully gripping tale...   Jul 8 2010, 05:57 AM
- - brellis   thanks for everything you're doing to help, Pa...   Jul 8 2010, 07:18 AM
|- - pandaneko   I am feeling duty bound to share the exitement, re...   Jul 8 2010, 08:46 AM
|- - stevesliva   QUOTE (pandaneko @ Jul 8 2010, 04:46 AM) ...   Jul 8 2010, 02:41 PM
|- - pandaneko   I got this news just before falling asleep. Appar...   Jul 8 2010, 04:11 PM
|- - pandaneko   I am getting a bit weary of uploading my stuff one...   Jul 9 2010, 12:43 PM
|- - fredk   QUOTE (pandaneko @ Jul 9 2010, 01:43 PM) ...   Jul 9 2010, 03:22 PM
- - Stu   Don't feel weary; you're our window on thi...   Jul 9 2010, 12:50 PM
- - ElkGroveDan   Yes, Thanks again pandaneko. ElkGroveNeko thanks ...   Jul 9 2010, 02:44 PM
- - Drkskywxlt   How much science can they realistically get out of...   Jul 9 2010, 03:26 PM
- - Hungry4info   I read that even if one grain was found, it could ...   Jul 9 2010, 03:40 PM
|- - Drkskywxlt   QUOTE (Hungry4info @ Jul 9 2010, 11:40 AM...   Jul 9 2010, 03:47 PM
- - Juramike   Even for just running a mass spect sample, there a...   Jul 9 2010, 04:38 PM
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