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Space & Astronomy

Bizarre elongated crater is a Martian mystery

By T.K. Randall
August 30, 2010 · Comment icon 12 comments

Image Credit: NASA
A peculiar elongated crater on the surface of Mars that doesn't fit with standard models has left astronomers baffled.
Known as Orcus Patera the crater is not quite as long as the Grand Canyon but is five times as wide, one possible explanation is that it started out as a standard crater but was later changed by shifting tectonic plates.
This crater, known as Orcus Patera, is a strange, elliptical crater located near Mars's equator. Roughly 240 miles long by 90 miles wide, its elongated shape doesn't fit with standard models of crater formation, leaving astronomers with a baffling mystery.


Source: io9.com | Comments (12)




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Comment icon #3 Posted by Shival 14 years ago
is that possible, wouldnt gravity have pulled it into the planet Yes, it would. Currently the most scientifically accepted theory is that it was once a normal crater that has been elongated by the previously very active volcanic area. (It's inbetween Olympus Mons and Elyseum Mons). My little pet theory though is that it's a meteorite/comet that broke up shortly before impact and impacted so close together that it's become indistinguishable.
Comment icon #4 Posted by Bamboo Samurai 14 years ago
My little pet theory though is that it's a meteorite/comet that broke up shortly before impact and impacted so close together that it's become indistinguishable. Sorta like what happened with shoemaker levy 9
Comment icon #5 Posted by The Silver Thong 14 years ago
Yes, it would. Currently the most scientifically accepted theory is that it was once a normal crater that has been elongated by the previously very active volcanic area. (It's inbetween Olympus Mons and Elyseum Mons). My little pet theory though is that it's a meteorite/comet that broke up shortly before impact and impacted so close together that it's become indistinguishable. Not really. If the asteroid was traveling fast enough it may have impacted and skipped off like a stone on water. Just a much more fantastic display that solids can act like liquids.
Comment icon #6 Posted by Bamboo Samurai 14 years ago
Has there been any talk of it being a massive caldera since it is surrounded by Elysium Mons and Olympus Mons?
Comment icon #7 Posted by The Silver Thong 14 years ago
Has there been any talk of it being a massive caldera since it is surrounded by Elysium Mons and Olympus Mons? Doubtful as a caldera even from mt Olympus on Mars would not have the power to make such a scar. It's an asteroid that deflected off the surface given it's trajectory. Impacts don't often happen straight on.
Comment icon #8 Posted by DurgaMata 14 years ago
There are even greater scars across planets. Thunderbolts of the Gods.
Comment icon #9 Posted by psyche101 14 years ago
Has there been any talk of it being a massive caldera since it is surrounded by Elysium Mons and Olympus Mons? It sits between two volcanoes and while the name "patera" is traditionally given to irregularly shaped volcanic craters, scientists know at least enough about the Orcus Patera to know it wasn't formed by a volcano.The most likely explanation is that it's an impact crater, although given the length of the scar, it would have to have been formed by something striking the surface of Mars at an angle of less than five degrees, possibly bouncing back off the surface. The floor of the crate... [More]
Comment icon #10 Posted by :PsYKoTiC:BeHAvIoR: 14 years ago
There are even greater scars across planets. Thunderbolts of the Gods. I suddenly have mental pictures of Zeus being trigger happy with lightning.
Comment icon #11 Posted by OverSword 14 years ago
Thats where I crash landed my flag ship in my "Mars, god of war" incarnation.
Comment icon #12 Posted by Shival 14 years ago
Not really. If the asteroid was traveling fast enough it may have impacted and skipped off like a stone on water. Just a much more fantastic display that solids can act like liquids. That's when it enters the athmosphere, there it can skip off the athmosphere if the angle is just right (even though the atmoshpere of Mars isn't noteworthy, so this might not happen there). But whenever it hits the ground it's slowed down to such a velocity that such a scenario is nigh impossible. Especially judging by the massiveness of this crater that scenario would definately be impossible, this is way past s... [More]


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