Earth Return & Sample Science |
Earth Return & Sample Science |
Feb 16 2024, 10:36 PM
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#196
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Senior Member Group: Members Posts: 1592 Joined: 14-October 05 From: Vermont Member No.: 530 |
The media is great. A few huge photos and a video. Looks like meticulous work
The mass is low-ish to these expectations, but I'd still say this estimate of "at least 2x 60g" was enough to say "stow it." https://arxiv.org/ftp/arxiv/papers/2109/2109.05561.pdf |
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Feb 17 2024, 12:48 AM
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#197
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
The mass is low-ish to these expectations... Paper says 250.37 +/- 101 g and 121.6 g is outside this range, but not by a huge amount (about 19% lower.) -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Mar 7 2024, 10:04 PM
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#198
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
https://lpsc2024.ipostersessions.com/defaul...-B2-03-BA-F5-5B
This link is to my LPSC poster. But can you see it without a request to log in? Let me know. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Mar 7 2024, 10:40 PM
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#199
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
It pops up, no problem.
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Mar 8 2024, 08:17 AM
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#200
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
Thanks. I can't tell how it looks to others. I know I can see it!
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Mar 8 2024, 03:42 PM
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#201
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Nicely done, Phil! I take it the title and heading font is from the template because I couldn't find a way to edit the formatting of those.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Mar 8 2024, 07:51 PM
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#202
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
Right. I didn't change anything in the template.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Apr 1 2024, 10:28 PM
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#203
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Member Group: Members Posts: 437 Joined: 14-December 15 Member No.: 7860 |
"The curation team at NASA’s Johnson Space Center in Houston has released the OSIRIS-REx sample catalog detailing the small rocks and dust that scientists around the globe can request for their research."
https://blogs.nasa.gov/osiris-rex/ https://curator.jsc.nasa.gov/osirisrex/index.cfm# - catalog https://curator.jsc.nasa.gov/osirisrex/aiva...ges_listing.cfm - some pictures |
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Apr 1 2024, 10:34 PM
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#204
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Member Group: Members Posts: 437 Joined: 14-December 15 Member No.: 7860 |
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Apr 1 2024, 10:40 PM
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#205
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Member Group: Members Posts: 437 Joined: 14-December 15 Member No.: 7860 |
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May 9 2024, 03:00 PM
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#206
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Newbie Group: Members Posts: 11 Joined: 30-May 08 Member No.: 4166 |
There's a publication up:
Asteroid (101955) Bennu in the Laboratory: Properties of the Sample Collected by OSIRIS-REx https://arxiv.org/abs/2404.12536 |
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May 9 2024, 05:26 PM
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#207
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Member Group: Members Posts: 437 Joined: 14-December 15 Member No.: 7860 |
There's a publication up: Asteroid (101955) Bennu in the Laboratory: Properties of the Sample Collected by OSIRIS-REx https://arxiv.org/abs/2404.12536 Thanks for this information. A very interesting publication - studies like this one are, in fact, the most valuable fruit generated by automatic interplanetary missions. For convenience, I am only adding a direct link to the PDF of the entire publication (including images): https://arxiv.org/pdf/2404.12536 |
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May 11 2024, 10:38 PM
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#208
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Member Group: Members Posts: 613 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
There's a publication up: There's a nice reference in that scientific preprint to a reconstruction analysis of the EDL at NTRS Things weren't quite as complicated as I speculated back in (post 116), as there had been a press statement about altitude that was spurious*. No need now, I think, to invoke the dynamic pressure I wondered about. The lines to the main deploy/drogue release pyro and the drogue deploy mortar were switched. The first firing was 14 seconds after a g-trigger (downgoing 3g), the second firing was to be 363 seconds after that trigger, or when a pressure sensor saw 10,000ft above sea level, whichever condition was met first. The first firing effectively caused nothing to happen, since both drogue and main were still buttoned up in the capsule, except the line from drogue to capsule was severed. The capsule was then falling faster than planned (no drogue!) and tumbling, until the pressure trigger fired (only 212 seconds after the g-trigger). Mortar fired throwing out the drogue which pulled out the main as it was dragged away. Although the main deployed at a higher dynamic pressure than intended (and at a who-knows-what attitude), it fortunately did so safely. Kudos to the team for writing up these details so they can be learned from. Ralph (*Francis Crick : "Any theory that fits all the facts will be wrong, because some of the facts will be wrong") |
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Jun 21 2024, 11:13 PM
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#209
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Senior Member Group: Members Posts: 1669 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Summary of LPSC abstracts from back in March:
https://www.hou.usra.edu/meetings/lpsc2024/...?session_no=253 -------------------- Steve [ my home page and planetary maps page ]
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Aug 28 2024, 07:59 PM
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#210
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Member Group: Members Posts: 437 Joined: 14-December 15 Member No.: 7860 |
Asteroid Bennu sample arrives at JAXA's Sagamihara Campus
https://curation.isas.jaxa.jp/en/topics/24-08-26.html https://www.isas.jaxa.jp/en/topics/003801.html "...On August 22, 2024, a portion of the sample collected from asteroid Bennu by NASA's asteroid sample return mission, OSIRIS-REx, was handed over to the Institute of Space and Astronautical Science from the United States National Aeronautics and Space Administration (NASA)... ...According to the agreement between JAXA's Hayabusa2 and NASA's OSIRIS-REx missions, JAXA was to receive 0.5% of the total weight of the Bennu sample within a year of its return to Earth... ...Finally, on September 24, 2023, the OSIRIS-REx spacecraft delivered to Earth 121.6 grams of samples from Bennu..." This amounts to about 0.6 g of Bennu material transferred to JAXA. Credit: JAXA |
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