Mercury / MESSENGER APOD of 2008 January 16 Updated
Mercury / MESSENGER APOD of 2008 January 16 Updated
Today's APOD has been updated because a much better image of Mercury from MESSENGER became available late yesterday that I was not aware of until this morning. It is rare that an APOD is updated during the day, although it has happened a time or two before.
I apologize to readers who were not initially aware of the change, and to our foreign language site translators for the late change.
- RJN
I apologize to readers who were not initially aware of the change, and to our foreign language site translators for the late change.
- RJN
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- Indigo_Sunrise
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Excellent! Keep those 'updates' coming!!!
I am looking forward to MESSENGER's images. [Almost as much as I look forward to the ones that come from Cassini.]
It's exciting to think that we're on the threshold of some fascinating discoveries and answers about Mercury.
Yay!
![Very Happy :D](./images/smilies/icon_biggrin.gif)
I am looking forward to MESSENGER's images. [Almost as much as I look forward to the ones that come from Cassini.]
It's exciting to think that we're on the threshold of some fascinating discoveries and answers about Mercury.
Yay!
Forget the box, just get outside.
Whoa! What a thought. Never had any thought that that might exist.BMAONE23 wrote:There is so much iron in it that it reminds me of what might be a core remnant of a gas giant that has had ALL it's atmosphere stripped by solar winds.
Except do we know what minerals are in the center of our four gas giants?
I think there is speculation that metallic hydrogen might be at the center of jupiter.
mercury
Mercury seems to be such a perfect sphere, from a distance. I am sure it would be a paine to drive on, even with a four wheel drive. How did it get to be soround ? Slowly solidifying like being annealed as time flows ?
Wolf Kotenberg
mercury...
isn't it dense because as the planets formed... all the mass was kinda orbiting around the sun... so the heavier elements were closer toward the sun, and so that's why mercury has so much iron.
that's why the first four planets are terrestrial and the other four are gaseous.
maybeh... lol.
that's why the first four planets are terrestrial and the other four are gaseous.
maybeh... lol.
oh!
it's my birthday today too!
isn't that special?![Idea :idea:](./images/smilies/icon_idea.gif)
isn't that special?
![Idea :idea:](./images/smilies/icon_idea.gif)
- DavidLeodis
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Here is the image being talked about, , , guess RJN forgot about the courtesy of posting the link in the first post to a new thread.
http://antwrp.gsfc.nasa.gov/apod/ap080116.html
http://www.lpod.org/
And, why is the image at LPOD so very much better than the one at APOD?!?!?!?!?!?!?!?!?!?!?
![Wink :wink:](./images/smilies/icon_wink.gif)
http://antwrp.gsfc.nasa.gov/apod/ap080116.html
Check with Chuck Wood of the Lunar Pict of the Day atIs it just me? It seems that there are a substantial number of craters shown in the images that have a raised "mound" in the exact center of the crater. I am not aware of these features in images of lunar craters.
Any thoughts anyone? Thanks.
Chromian
http://www.lpod.org/
And, why is the image at LPOD so very much better than the one at APOD?!?!?!?!?!?!?!?!?!?!?
"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
Another Mercury pic question
One of the pictures returned yesterday from MESSENGER here: http://messenger.jhuapl.edu/gallery/sci ... age_id=120 seems to have a "chain of craters" all connected (WSW of the bright rayed crater).
I know the moon has such chains as well but not as obvious as this one (to my recollection). Is it thought that this is made up from the same object that had broken into fragments before impacting similar to Comet Shoemaker-Levy on Jupiter?
I know the moon has such chains as well but not as obvious as this one (to my recollection). Is it thought that this is made up from the same object that had broken into fragments before impacting similar to Comet Shoemaker-Levy on Jupiter?
npsguy
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Guess I should have kept my high res monitor, but I see no obvious CS (concise and systematic) types of crater chains. some cohesive splatter patterns possibly.
There are a few CS types of crater chains on Mercury though that I know of.
There are a few CS types of crater chains on Mercury though that I know of.
"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
craterchains wrote:Guess I should have kept my high res monitor, but I see no obvious CS (concise and systematic) types of crater chains. some cohesive splatter patterns possibly.
There are a few CS types of crater chains on Mercury though that I know of.
It seems when I now click on the image it is 'upsidedown' from what I saw before (meaning it is now ENE of the crater with the rays).
![Image](http://messenger.jhuapl.edu/gallery/sciencePhotos/pics/EN0108827082M_web.png)
npsguy
keep sending out the imagers.
the bright crater looks like a double hit. and even maybe a triple hit from the apparent rim geometry. Endless discoveries.
Wolf Kotenberg
- iamlucky13
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Re: keep sending out the imagers.
I assume you're referring to the mentioned crater in the upper left with the debris rays? I'd say it's actually just a multi-ring crater rim. In large craters it's common for the displaced material around the rim to collapse in stages, causing the concentric ring appearance.ta152h0 wrote:the bright crater looks like a double hit. and even maybe a triple hit from the apparent rim geometry. Endless discoveries.
http://www.geologyrocks.co.uk/tutorials/meteor_craters
"Any man whose errors take ten years to correct is quite a man." ~J. Robert Oppenheimer (speaking about Albert Einstein)