Astrophysics turned upside down by unique ‘inside out’ planetary system

Comments

• Exeous@lemmy.world ⁨1⁩ ⁨day⁩ ago

  The planets around LHS 1903, a cool faint red dwarf star, begin as expected with a rocky planet orbiting close by and then two gas worlds. ESA’s CHaracterising ExOPlanet Satellite (CHEOPS) then reveals a surprising fourth planet at the system’s outer edge which is rocky, rather than gaseous.

  It sound like Pluto.

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  • Klear@quokk.au ⁨1⁩ ⁨day⁩ ago

    They said planet!

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• Paragone@lemmy.world ⁨21⁩ ⁨hours⁩ ago

  I think they’re missing something fundamental:

  the outer rocky-planet could well have formed closer, but been lobbed out, by gravitational-interaction.

  There’s NO reason to believe that every body in a current solar-relative-position “always” was there.

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