Posted on 04/24/2005 8:18:25 PM PDT by SunkenCiv
Jafar Arkani-Hamed of McGill University discovered that five impact basins--dubbed Argyre, Hellas, Isidis, Thaumasia and Utopia--form an arclike pattern on the Martian surface. Three of the basins are well-preserved and remain visible today. The locations of the other two, in contrast, were inferred from measurements of anomalies in the planet's gravitational field... a single source--most likely an asteroid that was initially circling the sun in the same plane as Mars--created all five craters. At one point the asteroid passed close to the Red Planet... and was broken apart by the force of the planet's gravity. The resulting five pieces subsequently slammed into Mars along its then equator. The center of the circle inscribed by the five craters, which marks the planet's ancient south pole, lies at present day latitude -30 and longitude 175.
(Excerpt) Read more at sciam.com ...
"What tipped Mars off its' then axis?"
Could be Uranus.... (heh-heh)
Maybe it happened while he was walking Pluto.
[dead silence, then crickets chirping]
[dead silence, then crickets chirping]
aye-yup
THE TWIN TILTS OF THE SPIN AXES OF MARS AND EARTH
Donald W. Patten and Samuel R. Windsor
http://www.kronia.com/symposium/patten.txt
"Mars experienced two fragmentations on its Roche Limit. One was the demise of the tiny planet Astra, which was about the diameter of Pluto, perhaps 1,500 to 1,600 miles in diameter. The demise of Astra provided an ancient ring of debris around Mars, of which Deimos and Phobos are vestiges. Other small debris almost surely is still there, but has escaped detection by unsuspecting astronomers. Some of this debris very likely ruined the recent, and very expensive Mars space mission."
Electric Arcs in Planetary Science
Thunderbolts Picture of the Day | 3/7/2005
Posted on 03/07/2005 11:19:39 PM PST by Swordmaker
http://www.freerepublic.com/focus/f-chat/1358256/posts
When Dust Storms Engulf Mars
Thunderbolts Picture of the Day | Mar 24, 2005 | Mel Acheson
Posted on 03/28/2005 10:19:07 PM PST by Swordmaker
http://www.freerepublic.com/focus/f-chat/1372800/posts
Scientists: The Latest Mac Converts
eCommerce Times | 2/14/2004 | Robyn Weisman
Posted on 02/16/2004 2:08:15 AM PST by Swordmaker
http://www.freerepublic.com/focus/f-news/1078971/posts
Martian "Blueberries" in the Lab
Thunderbolts Picture of the Day | Mar 25, 2005
Posted on 03/28/2005 9:58:11 PM PST by Swordmaker
http://www.freerepublic.com/focus/f-chat/1372790/posts
Your expertise please.
Weird. Thanks for the post.
Long-Destroyed Fifth Planet May Have Caused Lunar Cataclysm, Researchers Say
SPACE dot COM | 18 March 2002 ,posted: 03:00 pm ET
By Leonard David, Senior Space Writer
Posted on 03/25/2002 2:42:10 PM PST by vannrox
http://www.freerepublic.com/focus/f-news/653287/posts
My pleasure.
If there were life on Mars wouldn't it pass gas?
Waterbury Republican-American | April 30, 2005 | AP Wire
Posted on 04/30/2005 6:34:08 PM PDT by Graybeard58
http://www.freerepublic.com/focus/chat/1394490/posts
reprise, and a bttt...
The Exploded Planet Hypothesis 2000
Evidence that Mars is a former moon
http://www.metaresearch.org/solar%20system/eph/eph2000.asp
"Especially significant in this regard is the fact that half of Mars is saturated with craters, and half is only sparsely cratered. Moreover, the crustal thickness has apparently been augmented over one hemisphere by up to 20 km or so, gradually tapering off near the hemisphere boundaries. This 'crustal dichotomy' is also readily seen in Martian elevation maps"
New Theory: Catastrophe Created Mars' Moons
space.com | 29 Jul 03 | Leonard David
Posted on 07/29/2003 8:56:47 AM PDT by RightWhale
http://www.freerepublic.com/focus/news/954539/posts
The interesting thing is that earth has a similar structure. The Pacific Ocean is a huge, somewhat round, hole in the crust. That is where the material that is now the moon supposedly came from. If half of Mars' crust is gone, that might, assuming structure indicates history, be where the asteroidal material came from. If so, the present orbits of the main belt asteroids and Mars not be the same as the original main body since before that event but some kind of average.
I wasn't sure that the crust was missing so much as the debris from the impacts altered the surface of the Hemisphere of Craters.
Half the surface is a kilometer or more lower than the other half. Like an ocean basin.
ping with a related topic:
Scientist: Asteroid May Hit Earth in 2029
Yahoo/AP | 12/23/04 | JOHN ANTCZAK
Posted on 12/23/2004 8:24:16 PM PST by hole_n_one
http://www.freerepublic.com/focus/news/1307719/posts
just a light ping for the early morning hours.
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