• Question: how many dwaf planets have you decovered

    Asked by to Sarah on 16 Jun 2014. This question was also asked by .
    • Photo: Sarah Casewell

      Sarah Casewell answered on 16 Jun 2014:


      I’ve discovered about 40 brown dwarfs, and some of these are very small, only having about 10 Jupiter masses. Most of them are in star clusters like the Pleiades – you can see this with the naked eye (although not the brown dwarfs, they’re too faint)!

      Dwarf planets are something different though – this is what we now call pluto and the small, rocky bodies that live on the edge of the solar system

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