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    damarco's Avatar
    damarco Posts: 4, Reputation: 1
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    #1

    May 24, 2009, 04:29 AM
    Hypothetical Planetary System query
    Consider a hypothetical planetary system, within the Milky Way Galaxy, orbiting a central star known as Los. The star and planets, known collectively as the Ralos System, are to be found about two-thirds of the way out from the Galactic centre.


    (Q)
    One of the other planets in the Ralos System is Htrae, a relatively small, compact body, with an atmosphere, oceans of liquid water and a hard rocky crust that provides a surface for its inhabitants to live on. The inhabitants of Htrae have determined that their planet has an absolute age of 4.5 × 109 years. Explain the principle of a method they might have used to determine their planet’s age. PLEASE BE AS SPECIFIC SA POSS THANKS.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    May 24, 2009, 04:33 AM

    What are your thoughts? Do you realise that the question is really asking about how we determine the age of the Earth?
    FlyYakker's Avatar
    FlyYakker Posts: 378, Reputation: 41
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    #3

    May 26, 2009, 10:18 AM

    Los is Sol backwards and Htrea is an anagram for earth. Not subtle...
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