why should we define objects past mars as planets if they have no formal surface?
- aladdinwaLv 71 year agoFavourite answer
Because having a solid, crustal surface is not one of the three criteria for an object being a planet.
- Ronald 7Lv 71 year ago
They all have Solid Cores
And they are bigger than us
So I would keep that to yourself
- CliveLv 71 year ago
Because what else do you call an object that is big, round and orbits a star?
- nineteenthlyLv 71 year 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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- EricLv 41 year 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.
- Jeffrey KLv 61 year 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.
- NyxLv 71 year ago
Ahh, but they do have a "formal" surface.
- thomas fLv 71 year ago
According to the Ancients, planets are "wanderers". If they wander, then they're a planet. Sounds simple to me.
- CarolOklaLv 71 year 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
- 1 year ago
Because having a 'formal surface' isn't part of the 3 criteria that define a planet.