Comment on what would happen if a rogue, earth-size planet ran straight into the sun? anything interesting?

RegalPotoo@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

• deegeese@sopuli.xyz ⁨5⁩ ⁨weeks⁩ ago

  Sorry, but that’s wrong.

  Roche limit applies in a circular orbit, tidal effects are irrelevant in a head on collision.

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  • willow@lemmy.blahaj.zone ⁨5⁩ ⁨weeks⁩ ago

    Famous example of a comet breaking up from entering Jupiter’s roche limit in a highly eccentric orbit (not circular). Spaghettification is also an example of how tidal forces still apply during a head on collision.

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    • deegeese@sopuli.xyz ⁨5⁩ ⁨weeks⁩ ago

      Eccentric orbit is still an orbit with tidal forces.

      A dead in crash will stretch the sphere, but without angular momentum, it’s just a raindrop.

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• A_A@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

  if it “ran straight”, it wouldn’t have tangential speed, only radial.

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• ilinamorato@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

  All of the mass would still hit the sun, though.

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  • RegalPotoo@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

    Yeah, but single large mass hitting in one place vs stuff spread out vs planet forming a ring and deorbiting over months/years would affect the outcome

    Practically, I’d think there wouldn’t be a huge effect beyond some CMEs - the mass of the earth is a rounding error compared to the sun - but I’m not a cosmologist

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    • ilinamorato@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

      I tend to agree, but I also am not a cosmologist.

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      • PoorYorick@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

        I agree, and I once dated a cosmetologist.

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