SETI public: 3/4 of the Earth-like planets in the Universe are older than the Earth

From: Ron Blue (rcb5@msn.com)
Date: Wed Jul 24 2002 - 10:26:22 PDT

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I was of the opinion that only recently have high metal content earth-type planets been capable of being formed at high frequency rates. Ours was suggested to have occurred when two neutron stars hit each other and the super nova sent out the rich metals. Very old stars would have few earth type planets from such a model. What this suggest if true is that we are new kids on the block, but we could have allot of company very soon.

Which model is correct?

Ron Blue

    And if we assume that many life forms evolved on Earth-type
    worlds, a recent study suggests that:

    "three quarters of the Earth-like planets in the Universe are older than
    the Earth and their average age is 1.8 (plus or minus 0.9) billion years
    older than the Earth."

    Two billion years ago, the most advanced form of life on Earth
    were algae. Imagine what a planet with such a head start over
    our world could produce!

    Relevant articles:

    http://www.spacedaily.com/news/early-earth-01e.html

    http://www.arn.org/docs/news/lookingforET031501.htm

    This URL contains a link to the actual paper:

    http://www.phys.unsw.edu.au/SCHOOL_INFORMATION/MEDIA_ROOM/life_forms_2001.html

• Previous message: Daniel Boyd Fox: "Re: SETI public: Jill Tarter on the Fermi Paradox"
• In reply to: LARRY KLAES: "SETI public: Fw: Jill Tarter on the Fermi Paradox"

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