Earth Life Likely Came from Mars, Study Suggests


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I'm not sure if this article has all it's information straight.  I thought it was pretty accepted that the atmosphere on Mars was destroyed about 4 billion years ago. The article says that Mars had plenty of oxygen 3 billions years ago, and that isn't true.

 

http://www.nypost.com/p/news/international/scientists_mars_atmosphere_destroyed_1X5bj3YK2tXnTC7mETdauM

 

The oldest remains of life on Earth is from 3.8 billion years.  So I guess the story would make sense if the cataclysmic event on Mars destroyed it's atmosphere and then sent fragments towards Earth.  It seems like a very narrow window for this to occur.

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I'm not sure if this article has all it's information straight.  I thought it was pretty accepted that the atmosphere on Mars was destroyed about 4 billion years ago. The article says that Mars had plenty of oxygen 3 billions years ago, and that isn't true.

 

http://www.nypost.com/p/news/international/scientists_mars_atmosphere_destroyed_1X5bj3YK2tXnTC7mETdauM

 

The oldest remains of life on Earth is from 3.8 billion years.  So I guess the story would make sense if the cataclysmic event on Mars destroyed it's atmosphere and then sent fragments towards Earth.  It seems like a very narrow window for this to occur.

Being destroyed and being nonexistent are two different things. Mars, to this day, still has an atmosphere, just not one that you could breathe in. Oxygen is not a requirement for life.

 

http://news.sciencemag.org/plants-animals/2010/04/scienceshot-animals-live-without-oxygen

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It was not the same planet.  It was the same universe.

 

Except they've flat out said it's not a Alien prequel and not part of the alien(s) universe. 

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Check out Wikipedia. It states that they were clear it was set in the same universe, which is funny, cos that's how I remember it. No, it is not an alien prequel, except insofar as we now know how the aliens came to be created and by whom. Prometheus is supposed to be its own story and not a continuation of Alien, but they are related.

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