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Thread: 8 Billion Earth sized planets. Is this for real?

  1. #1 8 Billion Earth sized planets. Is this for real? 
    Time Lord
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    I saw this on the news today, and apparently it's making its rounds through most of the mainstream media.

    Is this a confirmed discovery, or just some speculation that got taken a little too seriously, and then sensationalized in order to make a good news story?

    http://news.yahoo.com/study-8-8-bill...212232920.html

    http://www.outsidethebeltway.com/scientists-at-least-8-8-billion-earth-size-planets-in-milky-way/

    http://www.smh.com.au/technology/sci...105-2wyd6.html


    Some clocks are only right twice a day, but they are still right when they are right.
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  3. #2  
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    Sounds right...100,000,000,000 stars (minimum) in the Milky Way.

    If less than 10% have an earth like planet (some could have several) then that,s the number.Multiply this by 100 million galaxies and the number is 8,800,000,000 x 100,000,000,000.

    If one in a million stars in the Universe has intelligent life it is a quadrillion independent intelligences. Some claim it could be one in a thousand stars...so more like a quintillion or 1,000,000,000,000,000,000.


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  4. #3  
    Forum Sophomore Estheria Quintessimo's Avatar
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    Quote Originally Posted by kojax View Post
    I saw this on the news today, and apparently it's making its rounds through most of the mainstream media.

    Is this a confirmed discovery, or just some speculation that got taken a little too seriously, and then sensationalized in order to make a good news story?

    Study: 8.8 billion Earth-size, just-right planets

    http://www.outsidethebeltway.com/scientists-at-least-8-8-billion-earth-size-planets-in-milky-way/

    Milky Way may contain 20 billion Earth-sized planets

    It is not a confirmed discovery and it is also not a speculation.

    It is a calculation.

    You see...

    The Kepler Space Telescope can only 'see' planets around suns, where that planet goes around in an orbit between the Sun and Kepler, so Kepler can observe it.

    For Kepler to observe a potential planet candidate,... this planet has to move himself between Kepler and the sun Kepler is observing. But alot of planets will be moving in orbits around their suns, in an orbit where Kepler can never see them. As Kepler can only see planets between itself and that sun. The calculation was made, knowing what angle of deveation Kepler can see, of the suns it looked at,... and the deveations or potential planet orbits of planets it will never be able to see.

    Example 1: O is a planet . X a star K is Kepler

    O
    X ------------------------------------------------------------------------------------ K


    Example 2:

    XO----------------------------------------------------------------------------------- K


    In example 1: O is a planet that goes around star X, 90 degrees from Kepler K point of observation.
    In example 2: O is a planet that goes around star X, zero degrees from Kepler K point of observation.

    So when planet O goes around star X... only in example 2,... will Kepler see the planet.
    Kepler K will never be able to see planet O in example 1, as this planet will never get between the star X and Kepler K.

    Savvy?
    Last edited by Estheria Quintessimo; November 5th, 2013 at 11:20 PM.
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