That could be a long time in the answering, and there could have been many and variedWhere does the electric discharge that hits mars come from?
causes. As Lloyd has done with his "Help Us Explain Crater Formation!", we could
speculate on possible mechanisms, and our answers may well tie in with his thread.
My candidates would include:
An interloper object or objects, with sufficient charge differential to arc to
planets as it/they passed through the solar system.
If the Sun is indeed part of a circuit with other Suns, then a pulse or surge
in that circuit could affect all the planets and their moons, perhaps causing
the moons to orbit close enough to their planets to interact electrically.
The solar system passing through a dense, differently charged 'cloud', such that
the planetary magnetosphere double layers break down. Mars having only
a disorganized magnetic field may have resulted in it suffering more damage.
The canyons or rilles suggest to me an object passing close by, while the mostly
circular or hexagonal craters would seem to be DL breakdown discharges.
@Lloyd
Mercury and Venus supposedly, have iron cores, Mercury having a molten one.Venus is likely a new planet, probably ejected from Saturn or Jupiter around 7,000 years ago, which is why it's so hot.
Iron passing through a magnetic field. I think I smell eddy currents and induction
heating, but thats just my EM bias showing.
I'll pass the baton here...
Edit.
Forgot to include some supersize solar flares or CMEs.
Huge solar flare said to jam China communications.
http://www.breitbart.com/article.php?id ... _article=1