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Comments

  • #62
    lcrcboy
    Registered Users, Registered Users 2 Posts: 562 ✭✭✭lcrcboy


    http://www.bbc.co.uk/news/science-environment-13423085

    just came across this interesting stuff


  • #63
    Son Of A Vidic
    Registered Users, Registered Users 2 Posts: 32,370 ✭✭✭✭Son Of A Vidic


    The famous Drake equation was designed to try and calculate the number of intelligent civilisations in our Galaxy.

    N = R* fp ne fl fi fc L

    N = The number of communicative civilizations
    R* = The rate of formation of suitable stars (stars such as our Sun)
    fp = The fraction of those stars with planets. (Current evidence indicates that planetary systems may be common for stars like the Sun.)
    ne = The number of Earth-like worlds per planetary system
    fl = The fraction of those Earth-like planets where life actually develops
    fi = The fraction of life sites where intelligence develops
    fc = The fraction of communicative planets (those on which electromagnetic communications technology develops)
    L = The "lifetime" of communicating civilizations

    Frank Drake himself estimated there could be perhaps 10,000 intelligent civilisations in our Milky Way galaxy alone.


  • #64
    CrazyRabbit
    Registered Users, Registered Users 2 Posts: 8,659 ✭✭✭CrazyRabbit


    Corvus Maximus wrote: »
    The famous Drake equation was designed to try and calculate the number of intelligent civilisations in our Galaxy.

    N = R* fp ne fl fi fc L

    N = The number of communicative civilizations
    R* = The rate of formation of suitable stars (stars such as our Sun)
    fp = The fraction of those stars with planets. (Current evidence indicates that planetary systems may be common for stars like the Sun.)
    ne = The number of Earth-like worlds per planetary system
    fl = The fraction of those Earth-like planets where life actually develops
    fi = The fraction of life sites where intelligence develops
    fc = The fraction of communicative planets (those on which electromagnetic communications technology develops)
    L = The "lifetime" of communicating civilizations

    Frank Drake himself estimated there could be perhaps 10,000 intelligent civilisations in our Milky Way galaxy alone.

    Depending on liberal or conservative guesses for each unknown variable, you could end up with 10 or 100,000,000.

    Now, where have I heard this before? :D


  • #65
    maninasia
    Registered Users, Registered Users 2 Posts: 4,636 ✭✭✭maninasia


    N = The number of communicative civilizations
    R* = The rate of formation of suitable stars (stars such as our Sun)
    fp = The fraction of those stars with planets. (Current evidence indicates that planetary systems may be common for stars like the Sun.)
    ne = The number of Earth-like worlds per planetary system
    fl = The fraction of those Earth-like planets where life actually develops
    fi = The fraction of life sites where intelligence develops
    fc = The fraction of communicative planets (those on which electromagnetic communications technology develops)
    L = The "lifetime" of communicating civilizations


    The ideas in this 'equation' are too limiting.


  • #66
    lcrcboy
    Registered Users, Registered Users 2 Posts: 562 ✭✭✭lcrcboy


    check this out very interesting and talks about the drake factor:



    http://www.youtube.com/watch?v=POJAlpEWILc


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  • #67
    RichieC
    Closed Accounts Posts: 7,332 ✭✭✭RichieC


    It would be an awful waste of space if there wasn't.


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