- #1
Whateverworks
- 20
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Hello PF.
I would like to get your view on the plausible scenario panspermia that might have happened from Mars to Earth. I will try to explain what I know about this scenario and please correct me if I am wrong but I am quite fascinated and a little bit disturbed that this might be the case.
Panspermia is the scenario where life on one planet is launched e.g on a asteroid seeding life on a nearby planet. There was a time called "The period of heavily bombardment in the yearly universe" where as in the name planets all over was a shooting gallery. We have found some Mars rocks that have chemistry going on which requires the presents of life it self. And that life is traceable to Mars and not to Earth.
Its possible for rocks to be "cast" away from the host planet at a certain speed, we called that; Escape velocity.
https://www.physicsforums.com/attachment.php?attachmentid=36763&stc=1&d=1309175834
For Earth that speed is about 11 km/s (sorry for using km) for an object to be launched away from the host planet up in the atmosphere and into space.
We also know that bacteria can be quite extreme and survive extreme temperatures, pressure, radiation in other words; They can survive a trip through space. The bacteria called; extremeophile is of that kind. A single cell organism but nonetheless life that could be the fundamental reason for evolution on Earth.
We know that Mars has one been a wet planet possibly with liquid water which indicate that life could thrive there. It could be that under the bombardment period those extremeophiles were launched from Mars and cast into space then "landed"(not the right word) on Earth - seeding life on Earth.
So if we found life on Mars based on DNA we should get over the fact that we are all descendants from Martians./WeW
I would like to get your view on the plausible scenario panspermia that might have happened from Mars to Earth. I will try to explain what I know about this scenario and please correct me if I am wrong but I am quite fascinated and a little bit disturbed that this might be the case.
Panspermia is the scenario where life on one planet is launched e.g on a asteroid seeding life on a nearby planet. There was a time called "The period of heavily bombardment in the yearly universe" where as in the name planets all over was a shooting gallery. We have found some Mars rocks that have chemistry going on which requires the presents of life it self. And that life is traceable to Mars and not to Earth.
Its possible for rocks to be "cast" away from the host planet at a certain speed, we called that; Escape velocity.
https://www.physicsforums.com/attachment.php?attachmentid=36763&stc=1&d=1309175834
For Earth that speed is about 11 km/s (sorry for using km) for an object to be launched away from the host planet up in the atmosphere and into space.
We also know that bacteria can be quite extreme and survive extreme temperatures, pressure, radiation in other words; They can survive a trip through space. The bacteria called; extremeophile is of that kind. A single cell organism but nonetheless life that could be the fundamental reason for evolution on Earth.
We know that Mars has one been a wet planet possibly with liquid water which indicate that life could thrive there. It could be that under the bombardment period those extremeophiles were launched from Mars and cast into space then "landed"(not the right word) on Earth - seeding life on Earth.
So if we found life on Mars based on DNA we should get over the fact that we are all descendants from Martians./WeW
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