back to article NASA trumpets rocky exoplanet find

NASA has announced it's nailed the first "bone-fide" [sic] rocky exoplanet, which at 1.4 times the diameter of Earth is the smallest such body spotted to date outside our solar system. As its name suggests, Kepler-10b was identified orbiting star Kepler-10 - at a distance of 560 light years from Earth - by the agency's …


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  1. TeeCee Gold badge


    I did briefly wonder how anyone could describe something with a density "similar to that of an iron dumbbell" could be described as "unequivocably rocky".

    Then I remembered that the Yanks don't do irony......

    1. Grease Monkey Silver badge


      Why couldn't something with the density of solid iron iron not be rocky?

      1. Baskitcaise


        I think TeeCee may have been a bit "rockonic" there.


        Please your self.

      2. Jan 0 Silver badge

        Re: Eh?

        Well, with the right impurities and given the uncertainty of that 1,300 C - the iron might just be molten!

        Conundrum: Is molten rock still rocky?

        Mine's the one with the tungsten sample spoon in the pocket.

        1. Anonymous Coward
          Anonymous Coward


          Even with impurities and allowing a little for inaccuracy I don't think you could account for about 250 centigrade of error.

          1. No, I will not fix your computer
            Thumb Up

            Re: Molten

            Actually a eutectic alloy of iron and antimony will be molten at 1300C - no error required (although that's a hell of a lot of antinmony), metals can behave strangely depending on the mix, take NaK as an example (Sodium and Potassium alloy) which is liquid at room temp.

  2. Old Man - Grey Fleece


    How different is the density of dumbbell iron from ordinary iron? or is the dumb in the wrong place.

  3. Code Monkey


    Oh good Lord!

    Still, well done on finding the planet, NASA

  4. Anonymous Coward
    Anonymous Coward


    Shurely "bone, fido".

    Or am I barking up the wrong tree?

  5. Beachrider

    Abusing the American Language is FUN...

    bona fide, bono-fide, it is only a borrowed term anyway.

    I guess that American-folksy terms just don't sound sweet to sophisticated European ears.

    We will sleep well, anyway.

  6. Intractable Potsherd Silver badge

    Another example of that law ...

    ... that says that you will always make a spelling error when you have pointed one out - it should be "minuscule", not "miniscule"!

    (Even though I have assiduously checked this, I just know there will be an error somewhere!)

    1. Lester Haines (Written by Reg staff) Gold badge

      Re: Another example of that law ...

      Oh yeah?

      1. Anonymous Coward

        Cheap at half the price

        Hmm, you get what you pay for.

  7. Anonymous Coward
    Anonymous Coward

    NASA finds Planet Hell?!?

    That would be a great name, being so hot and so much iron.

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