MESSENGER ARRIVES, Mercury Orbit Insertion |
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MESSENGER ARRIVES, Mercury Orbit Insertion |
 Apr 1 2011, 01:56 PM
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#106
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Solar System Cartographer  Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227  |
"Is that an ancient lava 'riverbed'?"
No! It's a secondary crater chain - look at the so-called Rima Stadius I on the Moon for a comparison (it's not called that any more) - just NE of Copernicus. 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 2011, 04:18 PM
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#107
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
More pictures up...
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 2011, 08:57 PM
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#108
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Junior Member Group: Members Posts: 22 Joined: 20-June 09 Member No.: 4830 |
new and unexpected images from MESSENGER arrived today ! http://messenger.jhuapl.edu/gallery/scienc...mp;image_id=448 Erwan |
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Apr 1 2011, 09:33 PM
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#109
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 Member Group: Members Posts: 214 Joined: 30-December 05 Member No.: 628 |
Dang, I still can't access jhuapl and a number of other U.S. sites from here in Taiwan. Does anyone else have a similar problem? The Cassini site is also inaccessible to me most of the time recently. I complained to my ISP and they actually blamed it on the Japan earthquake - but tracert indicates the problem is somewhere in the U.S. I thought the Internet was designed to be robust in the face of point blockages whatever the cause. Anyway I hope there will be plenty of secondary renderings springing up on this thread and elsewhere, before the "oohs" and "aahs" drive me nuts! Thanks Hugh, for your offering in 93 - spectacular.
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Apr 1 2011, 10:00 PM
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#110
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Senior Member Group: Members Posts: 1598 Joined: 14-October 05 From: Vermont Member No.: 530 |
You can always try a proxy. Sometimes intermediate DNS caching screws you. For awhile I couldn't access my college's domain from my employer's network. Sending a few emails went nowhere on that one, too.
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Apr 2 2011, 01:37 AM
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#111
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 Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
QUOTE (zeBeamer @ Apr 1 2011, 12:57 PM)  new and unexpected images from MESSENGER arrived today ! http://messenger.jhuapl.edu/gallery/scienc...mp;image_id=448  ...Apr 1 is ALWAYS an entertaining day on Earth!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Apr 2 2011, 04:54 PM
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#112
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Member Group: Members Posts: 206 Joined: 14-April 06 From: Seattle, WA Member No.: 745 |
QUOTE (zeBeamer @ Apr 1 2011, 01:57 PM) new and unexpected images from MESSENGER arrived today ! SuhWEET! |
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Apr 4 2011, 05:52 AM
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#113
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Junior Member Group: Members Posts: 60 Joined: 3-January 09 Member No.: 4520 |
This may be an odd question. Maybe I've misunderstood the science here. But is MESSENGER expected to markedly improved the ephemerides of Mercury and other solar system bodies?
Something I've been interested in (very casually! not a scientist!) is the accuracy of our knowledge of the planet's positions, and how folks use them to make statements about orbital stability and solar system masses and stuff like that. (eg. this PDF) Is this supposed to be no improvement, a minor improvement, or a major improvement? Are there any specific results expected or hoped for? |
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Apr 4 2011, 02:26 PM
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#114
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
Ranging and Doppler might make some improvements to the orbit data, and the rotation axis orientation, though maybe not much improvement over what radar has already given us. Other bodies? - I can't see that. The questions you are interested in are probably addressed most thoroughly with radar, at least out to Saturn's orbit. Goldstone and Arecibo routinely do radar ranging and doppler for solar system targets.
Phil (PS - new pics up again!) -------------------- ... 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 4 2011, 11:37 PM
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#115
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 Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
In the latest release they show a three image set that is said to help "test their ability to mosaic" but they didn't do it for the release.
Guess it's up to us then  
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Apr 5 2011, 12:23 AM
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#116
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Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Oddly fascinating that, Astro0, yes?
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Apr 5 2011, 01:16 AM
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#117
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
I wish we had more images to
Maybe if we wish really hard and click our heals together three times and say:  There's no place like Mercury. There's no place like Mercury. There's no place like Mercury!
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