There are NO planets that don’t orbit stars : once they don’t orbit a star they don’t follow the modern definition of a planet anymore
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The modern definition of “planet” only includes things that orbit the sun.
Honestly, the IAU’s definition of a planet is pretty useless.
Rocky planets, gas giant planets, ice giant planets, dwarf planets, super Earth planets, hycean planets, lava planets, rogue planets…
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I flat out don’t accept the notion that some starts have no planets. As far as I am concerned, if we have 8 major plantes and on average, 40% of planets are ejected, we should assume the average number of starting planets is 11.
nice sample size of one you have there
This is like saying, “If a carbon atom has 12 electrons, and on average it forms 4 covalent bonds, we should assume all atoms start with 16 electrons.”