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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