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What is the reason for absence of atmosp...

What is the reason for absence of atmosphere in some planets?

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The reason for absence of atmosphere in some planet is very low escape velocity of `2.38 km*s^(-1)`.
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Knowledge Check

  • In the case of the motion of a planet

    A
    the orbital velocity in its orbit remains constant
    B
    the orbital angular velocity remains constant
    C
    the total angular momentum remains constant
    D
    the orbital radius remains constant

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