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## Main Question or Discussion Point

Is there a PDE describing temperature as a function of time for a sphere in a vacuum (a moon in space)?

Since it can only radiate, the boundary would be a function of temperature to the fourth power (nonlinear), right?

Is there a book or thread out there I can reference?

Maybe this can be handled easily numerically.

Thank you

Mark

Since it can only radiate, the boundary would be a function of temperature to the fourth power (nonlinear), right?

Is there a book or thread out there I can reference?

Maybe this can be handled easily numerically.

Thank you

Mark