Brian Cox on why Mars lost its Magnetic Field

[trulahn]

Isn't part of Earth's internal heat from radioactive decay of radioactive elements like uranium? Does that also mean Mars has less of those?

[Wksfr]

Is radiation proportional to surface area? I am surprised if it is, I expected just conduction to be reliant on the surface area.

[CelibateCetologist]

Wait so if radiation is so intrinsic to a planet’s formation and existence, why does it have such a terrible effect on organic tissue?

[clavo]

Okay Brian, so what are some plausible ways of creating a significant magnetic field around Mars?

[fahim]

Then explain how titan still mantain its atmosphere despite its smaller size than mars

[GT_Void]

When did "he" start transitioning from female to male?

[astemet]

brian, volume of sphere to its surface is a constant