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Thread: Solar System Could Have More Than 100 Planets

  1. #11
    Radical Centrist BigLeRoy's Avatar
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    Quote Originally Posted by DebateDrone View Post
    I think one of the criteria for a planet is that it traps other objects nearby to orbit around it.
    No, heh, that would make the SUN a planet! The criterion you are thinking about is that a planet should CLEAR its orbit of other bodies. Because Pluto crosses the orbit of Neptune every once in a while, that is the criterion it fails. I think Pluto's demotion to a 'dwarf planet' was right and proper; and I think 'dwarf planet' is actually a very useful CATEGORY. Ceres is also a dwarf planet.

    I would like to see us sending robotic landers to Ganymede and some of the other Jovian moons....
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  2. #12
    Spock of Vulcan Ian Jeffrey's Avatar
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    Quote Originally Posted by BigLeRoy View Post
    And yes, there IS a Super-Earth somewhere WAY out there in the OUTER Solar System, some planet bigger than Earth but smaller than Neptune. We will find it within the next two years, I think.
    How do we know this?

  3. #13
    Radical Centrist BigLeRoy's Avatar
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    Quote Originally Posted by Puzzling Evidence View Post
    Its like you have nine kids in your family and one day your mom says "oh, by the way, we found out your little brother wasnt actually ours, so we left him at Walmart."
    Maybe a more accurate analogy would be this: You have nine kids in your family and one day your Mom says "Oh, by the way, that youngest kid turned out to actually be a MONKEY, so we left him at the zoo."
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  4. #14
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    You can cram Pluto up Uranus.
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  5. #15
    Veteran Member DebateDrone's Avatar
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    Quote Originally Posted by BigLeRoy View Post
    No, heh, that would make the SUN a planet! The criterion you are thinking about is that a planet should CLEAR its orbit of other bodies. Because Pluto crosses the orbit of Neptune every once in a while, that is the criterion it fails. I think Pluto's demotion to a 'dwarf planet' was right and proper; and I think 'dwarf planet' is actually a very useful CATEGORY. Ceres is also a dwarf planet.

    I would like to see us sending robotic landers to Ganymede and some of the other Jovian moons....
    I think I said one. Not the only one, not the main one.... just one that shows size alone does not make a planet.

    I think Pluto is smaller than Walmart, which is WHY they demoted it to a 'dwarf planet'...Big LeRoy
    Last edited by DebateDrone; 20th March 2017 at 01:42 PM.

  6. #16
    Mad Genius For Hire Puzzling Evidence's Avatar
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    Quote Originally Posted by Libertine View Post
    You can cram Pluto up Uranus.
    Post reported.

    *Turns around to check his backside for Pluto*

  7. #17
    Radical Centrist BigLeRoy's Avatar
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    Quote Originally Posted by Ian Jeffrey View Post
    How do we know this?
    From the mathematical analysis of the orbits of MANY Kuiper Belt objects. In a way, it is not too dissimilar to how Neptune was discovered FIRST by mathematicians, and THEN by astronomers. I will try to find and post a link......
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  8. #18
    Radical Centrist BigLeRoy's Avatar
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    Quote Originally Posted by Ian Jeffrey View Post
    How do we know this?
    Here's a Science Daily link for you, @Ian Jeffrey. This is a summary news article about the initial announcement of the discovery. We have learned a few more interesting things about Planet Nine since then, among them the high likelihood that it was originally an exo-planet, 'stolen' by our Sun during a somewhat-close encounter with another star. I will provide some more links on that and other Planet Nine issues. I am following this story with CONSUMING interest! A Super-Earth out in the OUTER reaches of the Solar System! How COOOOOOOL!! [And, boy, would it be 'cool'.....]

    https://www.sciencedaily.com/release...0120114539.htm

  9. #19
    Radical Centrist BigLeRoy's Avatar
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    Quote Originally Posted by BigLeRoy View Post
    Here's a Science Daily link for you, @Ian Jeffrey. This is a summary news article about the initial announcement of the discovery. We have learned a few more interesting things about Planet Nine since then, among them the high likelihood that it was originally an exo-planet, 'stolen' by our Sun during a somewhat-close encounter with another star. I will provide some more links on that and other Planet Nine issues. I am following this story with CONSUMING interest! A Super-Earth out in the OUTER reaches of the Solar System! How COOOOOOOL!! [And, boy, would it be 'cool'.....]

    https://www.sciencedaily.com/release...0120114539.htm
    Here's a link on the exo-planet origins of Planet Nine:

    https://www.sciencedaily.com/release...0531082201.htm

  10. #20
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    Personally, I must say Pluto not only is a planet, it is also flat.

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