Different types of brown dwarves - Artist's view - Different types of brown dwarves. Artwork...

Different types of brown dwarves - Artist's view - Different types of brown dwarves. Artwork - From left to right: brown dwarf type M, the youngest and most massive, temperature between 200 and 3000 degres Kelvin; brown dwarf type L, between 1500 and 2000 degres Kelvin; brown dwarf type T, between 1200 and 1500 degres Kelvin; brown dwarf type T but colder, from 1200 to 600 degres Kelvin; brown dwarf type still indefinite, less than 600 degres Kelvin; finally, on the right, Jupiter for size comparison. From left to right: a brown dwarf of type M (the youngest and most massive brown dwarves), a brown dwarf of type L, then a type T, another type T but colder, then another brown dwarf with a type unidentified yet which is colder, at last Jupiter for comparison