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  • carsonogenik carsonogenik Feb 27, 2013 1:12 AM Flag

    White Dwarf Stars

    White Dwarfs May Hold The Key To Finding Alien Life

    At the end of one part of a star’s life, if it’s not massive enough to become a neutron star or black hole – which is the vast majority of stars (97% of observed stars lack sufficient mass to become a neutron star or a black hole)
    it will shed mass and eventually become a very dense type of star known as a white dwarf. White dwarves are no longer capable of the nuclear fusion that sustains our Sun and most other stars. However, its residual thermal energy is enough to sustain heat for billions of years as it slowly dissipates.
    Even white dwarves that are close in age to that of the universe still retain their heat. Indeed, the average surface temperature of a white dwarf star is approx 12000 K, at least twice that of the sun (5800 Kelvin).

    The age of the universe is approx 13.8 billion years.
    On a cosmic scale, it is entirely possible that white dwarf stars have planets with liquid water, etc in a habitable zone.

    It’s around these slowly dying stars that astronomers now think may show the first signs of life. At least, given the limits of our current technology.
    That’s the conclusion of researchers at the Harvard-Smithsonian Center for Astrophysics.

    OK, whatever. Whether ET life exists depends on multiple factors...and is probably irrelevant. Radio broadcasts dissipate into noise at roughly 1/8 a light year. If we had a focused communication laser and knew where to direct it, we could expect a response from, say, the Centauri system in about 9 years, Barnard's star in 12 years, etc.

    Not that there's much intelligent life on this planet...

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    • If alien life does exist and comes looking, Mouth Breather may be the key to our survival. One look at his posts and the aliens will run the other way in horror at such a primitive, defective life form.

      • 1 Reply to al.gore23
      • If alien life does exist and comes looking, Mouth Breather may be the key to our survival. One look at his posts and the aliens will run the other way in horror at such a primitive, defective life form.
        @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

        There is a poster that depicts an alien saying in disbelief... ".... you have solar, wind, geothermal energy readily available..... and you're killing each other over OIL....?"

        Sentiment: Strong Sell

    • White Dwarfs May Hold The Key To Finding Alien Life
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      White Dwarfs..... I thought you were talking about the GOP in the House.

      Sentiment: Strong Sell

 
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