-> This pattern has been checked and the Earth's field seems to reverse
-> every 120,000 - 370,000 or so years.
-> A spot in the South Pacific has already reversed field.

I thought it was the 22000 year cycle of the Earth's axial wobble
causing the axial tilt to swing between 16 and -16 degrees. Or maybe
that was to explain changing weather patterns. I don't recall magnetic
fields associated with that cycle.

-> I believe, but may be mistaken, Mars has .6 Earth gravity.

That is the moon.

-> You can the VHS tape from PBS - NOVA.

VHS? India has forgotten that technology and moved on to DVD :]

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Jitender Saan