Author Topic: Connecting the dots with Grail's Gravity Map and Lunar features  (Read 4132 times)

Tom128

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Connecting the dots with Grail's Gravity Map and Lunar features
« on: December 20, 2012, 12:51:01 am »
Hello everyone,

Perhaps it is time to begin linking lunar features to the Grail Gravity Map. Are there some dots we can connect? May be a fun thought experiment here at the forum as we generate some ideas on what may be related to the changes shown by Grail.


Geoff

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  • The history of astronomy is a history of receding horizons. - Hubble.
Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #1 on: December 20, 2012, 07:40:17 am »
Great idea Tom! We need to post links to make it easier for people to find stuff related to Grail.

Here's the NASA main Grail page: Grail Mission - NASA

Link to the image Tom posted above: Mapping Lunar Highlands

Will post others as I find them.
« Last Edit: December 20, 2012, 10:30:06 am by Geoff »

kodemunkey

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Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #2 on: December 20, 2012, 10:14:46 am »
One of the lunar mare on the far side (orientalle?) looks like a gigantic bullet hole, perhaps that's a good place to start?

jules

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Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #3 on: December 20, 2012, 12:44:13 pm »
Excellent idea Tom. Love a good project!! :)

Tom128

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Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #4 on: December 20, 2012, 05:58:39 pm »
One thought is that there may be some correlation between crater impact angles and large gravity anomalies. We know that during the Apollo 16 mission,  the PFS-2 probe crashed  prematurely due to gravity mascons encountered during its orbit. Perhaps there may be a link between high incidents of oblique impacts and large gravity anomalies.



http://science.nasa.gov/science-news/science-at-nasa/2006/06nov_loworbit/
« Last Edit: December 21, 2012, 01:10:27 am by Tom128 »

kodemunkey

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Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #5 on: December 20, 2012, 06:49:28 pm »
How would this idea be done?

Tom128

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Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #6 on: December 20, 2012, 08:27:47 pm »
Even though there is negligible atmosphere around the moon, we can still use that analogy for gravity variations. A baseball pitcher throws a slider or knuckle ball that affects the behavior of the ball as it moves across the plate. Substitute gravity variations for the pitcher's toss. There most likely is a way to mathematically describe these effects on moving bodies using the latest Grail map.  We would need some input from the science team. Knowing how gravity anomalies behave at area specific sites, we can then look for visual clues on the lunar surface that would account for these effects from incoming bodies. That's my current view thus far, though there are a host of other possibilities.

« Last Edit: December 21, 2012, 01:12:08 am by Tom128 »

kodemunkey

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Re: Connecting the dots with Grail's Gravity Map and Lunar features
« Reply #7 on: December 20, 2012, 09:27:40 pm »
what about sinkholes? i guess the map wouldn't be that fine?