Southern Moonscape, lunar craters (APOD 23 Aug 2007)
-
- Commander
- Posts: 807
- Joined: Thu Jul 21, 2005 2:57 pm
- Location: On a boat near Tacoma, WA, usa
- Contact:
Southern Moonscape, lunar craters (APOD 23 Aug 2007)
Am I seeing things, or are there some very square looking craters here?
http://antwrp.gsfc.nasa.gov/apod/ap070823.html
BTW, and FYI to all, here is another great site for looking at moon images.
The Lunar Picture Of the Day LPOD
http://www.lpod.org/
They recently had a great mention of Moretus also.
http://www.lpod.org/?m=20070819
http://antwrp.gsfc.nasa.gov/apod/ap070823.html
BTW, and FYI to all, here is another great site for looking at moon images.
The Lunar Picture Of the Day LPOD
http://www.lpod.org/
They recently had a great mention of Moretus also.
http://www.lpod.org/?m=20070819
"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
crater upon crater
Why are there so many craters on the moon and how often do they hit?
We don't see as many on other planets do we?
We don't see as many on other planets do we?
-
- Commander
- Posts: 807
- Joined: Thu Jul 21, 2005 2:57 pm
- Location: On a boat near Tacoma, WA, usa
- Contact:
Remember the Barringer Crater?
It looks sort of square also, , ,
http://antwrp.gsfc.nasa.gov/apod/ap971117.html
and again,
http://antwrp.gsfc.nasa.gov/apod/ap990711.html
and again, , , ,
http://antwrp.gsfc.nasa.gov/apod/ap070623.html
It looks sort of square also, , ,
![Confused :?](./images/smilies/icon_confused.gif)
http://antwrp.gsfc.nasa.gov/apod/ap971117.html
and again,
http://antwrp.gsfc.nasa.gov/apod/ap990711.html
and again, , , ,
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
http://antwrp.gsfc.nasa.gov/apod/ap070623.html
"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
-
- Commander
- Posts: 807
- Joined: Thu Jul 21, 2005 2:57 pm
- Location: On a boat near Tacoma, WA, usa
- Contact:
APOD 23/8/07
You forget the effects of atmosphere and weathering which removes the majority of all but the biggest impact events.
For me, I can't see any craters, only cones with their tops neatly sliced off.
For me, I can't see any craters, only cones with their tops neatly sliced off.
APOD 2007 August 23 Southern Moonscape Shadows
I sucked the image into Photo-Editor and rotated it 180 degrees.
This puts the shadows where my eye can see the depth of the craters.
I see one of my favorite six sided craters.
This puts the shadows where my eye can see the depth of the craters.
I see one of my favorite six sided craters.
- JohnD
- Tea Time, Guv! Cheerio!
- Posts: 1585
- Joined: Wed Feb 16, 2005 2:11 pm
- Location: Lancaster, England
Re: crater upon crater
Oh, yes we do!grayness wrote:Why are there so many craters on the moon and how often do they hit?
We don't see as many on other planets do we?
Even on Earth.
See this map, of just North America, and just the BIG craters that are still observable after weathering and geology: http://www.unb.ca/passc/ImpactDatabase/ ... erica.html
John
Interesting that the gas fields lie along the circular rim of this impact
http://www.unb.ca/passc/ImpactDatabase/images/avak.htm
http://www.unb.ca/passc/ImpactDatabase/images/avak.htm
August 23 APOD
http://antwrp.gsfc.nasa.gov/apod/ap070823.html
This picture shows lines in a NNE direction (if N was up) that almost look like dust blown by a wind. We all know that is unlikely if not impossible but then, what is the cause of the lines? Are they an artifact of the foreshortened perspective?
Look especially at the left middle area just left of the crater mentioned in the text. It is one of the brighter areas in the picture.
This picture shows lines in a NNE direction (if N was up) that almost look like dust blown by a wind. We all know that is unlikely if not impossible but then, what is the cause of the lines? Are they an artifact of the foreshortened perspective?
Look especially at the left middle area just left of the crater mentioned in the text. It is one of the brighter areas in the picture.
APOD 23rd August 2007 - Lunar Craters
http://antwrp.gsfc.nasa.gov/apod/ap070823.html
Is it just me, or does anyone else have real problems resolving these kind of images as craters and not bumps?
It takes me a good few minutes of squinting and staring and looking at other details before I can perceive the craters as concave.
Does anyone else get this problem![Question :?:](./images/smilies/icon_question.gif)
Is it just me, or does anyone else have real problems resolving these kind of images as craters and not bumps?
It takes me a good few minutes of squinting and staring and looking at other details before I can perceive the craters as concave.
![Shocked :shock:](./images/smilies/icon_eek.gif)
Does anyone else get this problem
![Question :?:](./images/smilies/icon_question.gif)
-
- Ensign
- Posts: 59
- Joined: Thu Jun 16, 2005 3:46 pm
Re: APOD 23rd August 2007 - Lunar Craters
Very commonLucretia wrote:http://antwrp.gsfc.nasa.gov/apod/ap070823.html
Is it just me, or does anyone else have real problems resolving these kind of images as craters and not bumps?
It takes me a good few minutes of squinting and staring and looking at other details before I can perceive the craters as concave.![]()
Does anyone else get this problem
http://www.badastronomy.com/bad/misc/ho ... m.html#con
-
- Science Officer
- Posts: 334
- Joined: Thu Jul 21, 2005 3:06 pm
- Location: Vancouver Island, BC
- Contact:
After personally scrutinizing thousands or what might even be thousands upon thousands of images of planetary bodies in our solar system with similar markings, the goddess Nereid’s “modern concordance cosmological models” or the only “scientific game in town” would have you believe these strafe like marks (scarring) to be just a figment of your imagination.
Tic Toc
-
- Commander
- Posts: 807
- Joined: Thu Jul 21, 2005 2:57 pm
- Location: On a boat near Tacoma, WA, usa
- Contact:
A figment of my imagination? That is possible. At my age there are several figments of my imagination lying around. However, you mentioned scarring. I don't know about scarring but a series of small meteorite strikes all coming from the same general direction might make sense.
Like the "face" on Mars, I need to see this same spot from a different angle. Any links to other pictures of the same area?
Like the "face" on Mars, I need to see this same spot from a different angle. Any links to other pictures of the same area?
-
- Science Officer
- Posts: 334
- Joined: Thu Jul 21, 2005 3:06 pm
- Location: Vancouver Island, BC
- Contact:
There is a Partial Solar Eclipse on September 11, 2007, also.
Partial Solar Eclipse
Oh fasinating, a live feed from NASA of the lunar eclipse on the 28th.
![Image](http://sunearth.gsfc.nasa.gov/eclipse/LEmono/TLE2007Aug28/image/TLE2007Aug28-PDTs.GIF)
Path of the Moon through Earth's umbral and penumbral shadows during the Total Lunar Eclipse of Aug. 28, 2007.
(Pacific Daylight Time)
Partial Solar Eclipse
Oh fasinating, a live feed from NASA of the lunar eclipse on the 28th.
Path of the Moon through Earth's umbral and penumbral shadows during the Total Lunar Eclipse of Aug. 28, 2007.
(Pacific Daylight Time)
Tic Toc
- Chris Peterson
- Abominable Snowman
- Posts: 18459
- Joined: Wed Jan 31, 2007 11:13 pm
- Location: Guffey, Colorado, USA
- Contact:
Re: crater upon crater
About 4 billion years ago, something happened that flung a lot of material into the inner Solar System. This was the Late Heavy Bombardment, which isn't well understood, but may be related to an orbital resonance between Jupiter and Saturn. In any case, most of the cratering in the Solar System, including that on the Moon, happened back then. It is preserved on the Moon, on Mercury, and maybe on some of Jupiter's and Saturn's large moons because they are airless and geologically stable. We don't see much on Venus, Earth, Mars, and many moons because they have active processes, either tectonic or atmospheric, that reshape the surface over millions or hundreds of millions of years (the process is slower on Mars, so we do see significant cratering, although much less than on the Moon).grayness wrote:Why are there so many craters on the moon and how often do they hit?
We don't see as many on other planets do we?
Cratering since then has been much more sporadic and rare. Gravitational effects of the planets, especially Jupiter, serve to keep the inner Solar System relatively clear of debris. Small meteoroids hit the Moon regularly, but these are not large enough to make craters visible from Earth. Events large enough to produce craters ~1km across probably happen every few tens of thousands of years. Amateurs and professionals armed with video cameras and small telescopes record multiple impacts on the Moon during many meteor showers.
Chris
*****************************************
Chris L Peterson
Cloudbait Observatory
https://www.cloudbait.com
*****************************************
Chris L Peterson
Cloudbait Observatory
https://www.cloudbait.com