07-13-2020, 08:42 AM
(07-10-2020, 04:38 AM)dangerous_safety Wrote: From what I've read, the most likely cause for Venus lacking a magnetic field is that its core is entirely molten. The thicker crust and lack of plate tectonics, limits the rate of heat loss from the core, keeping it liquid. Rotation could certainly play a role as well though.
Earth's core was entirely molten until about 500 million - 2 billion years ago, depending on which model of the inner core you cite. However, there is evidence of a magnetic field up to 3.5 billion years ago.
Mike Miller, Materials Engineer
----------------------
"Everbody's always in favor of saving Hitler's brain, but when you put it in the body of a great white shark, oh, suddenly you've gone too far." -- Professor Farnsworth, Futurama
----------------------
"Everbody's always in favor of saving Hitler's brain, but when you put it in the body of a great white shark, oh, suddenly you've gone too far." -- Professor Farnsworth, Futurama
