IPB

Welcome Guest ( Log In | Register )

8 Pages V  « < 6 7 8  
Reply to this topicStart new topic
MESSENGER ARRIVES, Mercury Orbit Insertion
Phil Stooke
post Apr 1 2011, 01:56 PM
Post #106


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
Phil Stooke
post Apr 1 2011, 04:18 PM
Post #107


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
zeBeamer
post Apr 1 2011, 08:57 PM
Post #108


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
Go to the top of the page
 
+Quote Post
tanjent
post Apr 1 2011, 09:33 PM
Post #109


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.
Go to the top of the page
 
+Quote Post
stevesliva
post Apr 1 2011, 10:00 PM
Post #110


Senior Member
****

Group: Members
Posts: 1576
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.
Go to the top of the page
 
+Quote Post
nprev
post Apr 2 2011, 01:37 AM
Post #111


Merciless Robot
****

Group: Admin
Posts: 8783
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



laugh.gif laugh.gif laugh.gif ...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.
Go to the top of the page
 
+Quote Post
Ron Hobbs
post Apr 2 2011, 04:54 PM
Post #112


Member
***

Group: Members
Posts: 204
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!
Go to the top of the page
 
+Quote Post
maschnitz
post Apr 4 2011, 05:52 AM
Post #113


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?
Go to the top of the page
 
+Quote Post
Phil Stooke
post Apr 4 2011, 02:26 PM
Post #114


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
Astro0
post Apr 4 2011, 11:37 PM
Post #115


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 wink.gif smile.gif

Attached Image
Go to the top of the page
 
+Quote Post
nprev
post Apr 5 2011, 12:23 AM
Post #116


Merciless Robot
****

Group: Admin
Posts: 8783
Joined: 8-December 05
From: Los Angeles
Member No.: 602



Oddly fascinating that, Astro0, yes? wink.gif


--------------------
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.
Go to the top of the page
 
+Quote Post
Astro0
post Apr 5 2011, 01:16 AM
Post #117


Senior Member
****

Group: Admin
Posts: 3108
Joined: 21-December 05
From: Canberra, Australia
Member No.: 615



I wish we had more images to play work with. It's going to be hard to wait for the PDS release a few months from now.
Maybe if we wish really hard and click our heals together three times and say:

Attached Image There's no place like Mercury. There's no place like Mercury. There's no place like Mercury! smile.gif
Go to the top of the page
 
+Quote Post

8 Pages V  « < 6 7 8
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 19th March 2024 - 03:58 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.