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Planets around Alpha Centauri

  1. Aug 21, 2005 #1
    An article about the likely magnitudes and feasibility of terrestrial sized rocky planets orbiting in the habitable zones in the Alpha Centauri system:

    (link removed)

    Last edited by a moderator: Oct 26, 2006
  2. jcsd
  3. Aug 21, 2005 #2
    Are you trying to sell that book here or something? Looks like science fiction to me.
  4. Aug 21, 2005 #3
    But didn't the Robinsons already explore that area of space?
  5. Aug 21, 2005 #4
    Alpha Centauri is a trinary system. I dought you'll find any hospitible worlds there. The orbits are just to unstable.
  6. Aug 21, 2005 #5


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    No, that's where they were headed, but they never actually got there because they became Lost in Space
  7. Aug 21, 2005 #6


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    Alpha Centuari A and B have a closest approach of about 11 AU. This means that both have a zone in which they could have stable planetary orbits that extends out to 2 AU from each star. Alpha Centauri C is too small and far away to have any significant effect on the stabilty of planets around the other two (In fact, it is not even clear whether C is even gravitationally bound to A and B)
  8. Aug 22, 2005 #7
    Of course it is possible for stable orbits to exist, but it isn't that likely.
  9. Oct 26, 2006 #8
    You would have thought being the nearest star system to ours that we'd have found planets already.
  10. Oct 26, 2006 #9


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    To support your statement.

    I would say that the statement "One cannot see the forest for the trees" applies here.:biggrin:

  11. Oct 26, 2006 #10


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    Have people looked for planets there? I would think we could have deteced planets if they were there.
  12. Oct 26, 2006 #11


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    Alpha Centauri being closest star system doesn't really benefit the detection techniques. We're not trying to "see" the planets. We're trying to measure a doppler shift in a star's velocity caused by an orbiting planet.
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