So, did its surface changed since '81, or stripes simply were not visible? Where can I take a look at those '81 photos?APOD[/url] [url=http://saturn.jpl.nasa.gov/news/press-release-details.cfm?newsID=598]Cassini aug 30 pressrelease wrote:...the moon's southern pole is active. The pole had episodes of geologic activity as recently as 10 years ago. ...When NASA's Voyager 2 spacecraft flew over the moon's north pole in 1981, it did not observe the tiger stripes.
Sept 6/2005 APOD
-
- Commodore
- Posts: 2019
- Joined: Tue Oct 12, 2004 5:25 pm
Sept 6/2005 APOD
-
- Commentator Model 1.23
- Posts: 4076
- Joined: Wed Feb 23, 2005 6:55 pm
- Location: California
-
- Plutopian
- Posts: 8200
- Joined: Wed Jul 27, 2005 3:41 pm
- Location: Nebraska
-
- Commodore
- Posts: 2019
- Joined: Tue Oct 12, 2004 5:25 pm
-
- Commander
- Posts: 807
- Joined: Thu Jul 21, 2005 2:57 pm
- Location: On a boat near Tacoma, WA, usa
Sorry Makc, I can't see any reference points that match up to be able to check for changes. Over the past three years I have done allot of crater comparisons and searching images for changes on Mars. There are many, but you have to first get a reference point that matches up in both images, like sets of craters, or ridges that are easily identifiable in
both images. then look for changes. Lat. and Long are a big help ,,,,,, when they bother giving those details.
QUOTE
EDIT: now, when I've looked at it 2nd time... so many details do not fit... maybe these "matching" patterns are simply my imagination?
Patterns may be different, but until we have a known view of the same area, we won't know for sure. I am now looking at a bunch of pics trying to find one that shows the same area. None ,,,,,,, yet.
I take it that you can't just transfer posts in this BB? Bummers.
Norval
both images. then look for changes. Lat. and Long are a big help ,,,,,, when they bother giving those details.
QUOTE
EDIT: now, when I've looked at it 2nd time... so many details do not fit... maybe these "matching" patterns are simply my imagination?
Patterns may be different, but until we have a known view of the same area, we won't know for sure. I am now looking at a bunch of pics trying to find one that shows the same area. None ,,,,,,, yet.
I take it that you can't just transfer posts in this BB? Bummers.
Norval
"It's not what you know, or don't know, but what you know that isn't so that will hurt you." Will Rodgers 1938
-
- Ensign
- Posts: 57
- Joined: Mon Dec 20, 2004 3:24 pm
- Location: St. Louis, MO
maybe they changed too? just a little?craterchains wrote:Sorry Makc, I can't see any reference points that match up to be able to check for changes. Over the past three years I have done allot of crater comparisons and searching images for changes on Mars. There are many, but you have to first get a reference point that matches up in both images, like sets of craters, or ridges that are easily identifiable in
both images. then look for changes. Lat. and Long are a big help ,,,,,, when they bother giving those details.
QUOTE
EDIT: now, when I've looked at it 2nd time... so many details do not fit... maybe these "matching" patterns are simply my imagination?
Patterns may be different, but until we have a known view of the same area, we won't know for sure. I am now looking at a bunch of pics trying to find one that shows the same area. None ,,,,,,, yet.
I take it that you can't just transfer posts in this BB? Bummers.
Norval
-
- Commander
- Posts: 807
- Joined: Thu Jul 21, 2005 2:57 pm
- Location: On a boat near Tacoma, WA, usa
Crosscountry, "maybe they changed too? just a little?".
Yes, that is a very distinct possibility. But, we still need reference points before we can determine any changes. Scientists seem to have them, but aren't sharing.
Makc, I'd say lock the other thread and do your post transfer thingy.
Norval
Yes, that is a very distinct possibility. But, we still need reference points before we can determine any changes. Scientists seem to have them, but aren't sharing.
Makc, I'd say lock the other thread and do your post transfer thingy.
Norval
"It's not what you know, or don't know, but what you know that isn't so that will hurt you." Will Rodgers 1938
-
- Commentator Model 1.23
- Posts: 4076
- Joined: Wed Feb 23, 2005 6:55 pm
- Location: California
The images from the Voyager 2 probe passed over the North Pole of the moon. If you look at the cassini images of the polar regions you will see the crater paterns you are looking for. I do not believe that there are any Voyager images of the south polar region, at least none that I have been able to find.
-
- Commentator Model 1.23
- Posts: 4076
- Joined: Wed Feb 23, 2005 6:55 pm
- Location: California
-
- Commodore
- Posts: 2019
- Joined: Tue Oct 12, 2004 5:25 pm
I'm affraid BMAONE is right. Here's what he said in PM (why PM, anyway ?):
Now,
.It would appear that the older voyager image is of the north polar region.
Look at:
http://www.nasa.gov/mission_pages/cassi ... 07721.html
And compare it to
http://Voyager.jpl.nasa.gov/image/image ... celadx.gif
Now,
since this thread (my question) is now resolved, I will lock it insteadMakc, I'd say lock the other thread and do your post transfer thingy.
Norval