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Largest crater(s) in the solar system
Guest_PhilCo126_*
post Sep 28 2008, 11:33 AM
Post #1





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Which is in fact the largest crater in our solar system?

Is it the 4000 km Valhalla multiring basin on Jupiter's moon Callisto ?


Internet searches always come up with the 2000 km Aitken basin on the farside of Earth's Moon
huh.gif
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Guest_PhilCo126_*
post Sep 29 2008, 11:12 AM
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Indeed tasp, trying to compare with Earth ( KT impactor was probably 12 kilometers in diameter and caused the Chicxulub Crater of about 200 kilometers diameter, which was probably larger ) is also difficult as our Moon doesn't have any atmosphere...
Interesting though is the multiple impact theory which suggests a possibility of near simultaneous impactors of which fragments collided with the Moon huh.gif
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john_s
post Sep 29 2008, 03:29 PM
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A rule of thumb is that the crater is about 20x the diameter of the impactor. Despite all the variables mentioned above, I'd guess this probably works to within a factor of two either way in most cases.

John.
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Posts in this topic
- PhilCo126   Largest crater(s) in the solar system   Sep 28 2008, 11:33 AM
- - Pavel   The northern hemisphere of Mars might be a "c...   Sep 28 2008, 03:17 PM
- - Phil Stooke   The actual crater inside Valhalla would be quite s...   Sep 28 2008, 06:09 PM
|- - scalbers   QUOTE (Phil Stooke @ Sep 28 2008, 06:09 P...   Sep 29 2008, 04:33 PM
- - Vultur   I didn't know there was a 2000 kilometer crate...   Sep 28 2008, 07:25 PM
- - tasp   You know, Vultur, that is an interesting question....   Sep 28 2008, 09:03 PM
- - PhilCo126   Indeed tasp, trying to compare with Earth ( KT imp...   Sep 29 2008, 11:12 AM
|- - john_s   A rule of thumb is that the crater is about 20x th...   Sep 29 2008, 03:29 PM
- - PhilCo126   Well the crater itself in the middle of the extens...   Sep 29 2008, 05:29 PM
- - Phil Stooke   "isn't that small after all" ... Th...   Sep 30 2008, 01:42 AM
- - chuckclark   Well, given the talk about South Pole Aitkin Basin...   Nov 10 2008, 02:22 PM
- - Vultur   QUOTE (john_s @ Sep 29 2008, 04:29 PM) A ...   Nov 10 2008, 08:50 PM

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