why should we define objects past mars as planets if they have no formal surface?

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  • 9 months ago
    Best answer

    Because having a solid, crustal surface is not one of the three criteria for an object being a planet.

  • 9 months ago

    They all have Solid Cores

    And they are bigger than us

    So I would keep that to yourself

  • Clive
    Lv 7
    9 months ago

    Because what else do you call an object that is big, round and orbits a star?

  • 9 months ago

    Because there's a sense in which that's also true of Venus, and in other star systems of hot Jupiters.

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  • Eric
    Lv 4
    9 months ago

    They just bestow names on things they claim exist billions of miles away. It's how they justify the billions of dollars they squander that would be better dedicated to schools and hospitals and communities and real science. Not pseudoscience.

  • 9 months ago

    They meet the definition of planets. A planet doesn't have to have a solid surface. If it orbits the sun, dominates the region of its orbit, and it big enough for gravity to make it round, it is a planet.

  • Nyx
    Lv 7
    9 months ago

    Ahh, but they do have a "formal" surface.

    https://solarsystem.nasa.gov/system/downloadable_i...

    • Zardoz
      Lv 7
      9 months agoReport

      The gas giants have a defined surface. They don't have a true surface. The atmosphere becomes more liquid like grading into solid like.

  • 9 months ago

    According to the Ancients, planets are "wanderers". If they wander, then they're a planet. Sounds simple to me.

  • 9 months ago

    Because they DO hsve a surface underneath all that atmosphere is why.

    Planets chemically differentiate with iron and nickel forming the cores of ALL the planets. That is WHY they have global magnetic fields stronger than Earth's magnetic field..

    Source(s): B.S. geology, M.S. ABT geophysics, B.S. physical geography, M.S. geology
  • 9 months ago

    Because having a 'formal surface' isn't part of the 3 criteria that define a planet.

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