posted on Mar, 11 2016 @ 07:30 PM
a reply to: swanne
True but a comet, asteroid or even magnetic flare from the sun that passed close enough would certainly still have an effect though we would expect
due to the natural molton iron core of our planet with it's differential rotation speed generating our strong field that it would likely be far more
resiliant than that of Mars.
Mars of course did once have a similar but smaller core and it also once generated it's own stronger field but other than natural cooling it look's
like something disrupted mars core sufficiantly to almost totally kill off this generation.
There is a valid argument that something may have slammed into mars in the past, this caused the internal molton core to litterally be smashed off
from the planet's centre and may have been the reason for the vast Olympus Monze feature, the largest known volcano in the solar system and even more
strangely so for the size of Mars itself is much smaller than earth.
It may also have been a geologically relatively recent event because though mars is more or less geologically stable it still has erosion.
Though it may also have been multiple strikes over time and that could simply be a giant volcano.
This site is interesting though since it's founder has now passed away and new finding's are coming in all the time it may need someone like him
A brilliant scientist with a rogue theory and not scared of going out on a limb about it, he believed that mars once the moon of another planet which
was destroyed and whose remains now form the asteroid belt (partial remains as most would have been catapulted away and entered eliptical orbits
So yes a close enough pass by any sufficiantly large body or magnetic field would disrupt our own planets magnetosphere, it is the same principle
exactly as passing two magents near to one another and studying there magnetic flux, they will bend and deform in the presence of one another and
merge just as this comets did with mars but of course our planet being larger and with a much larger core would probably recover and suffer less if
any lasting effects of this passage.
edit on 11-3-2016 by LABTECH767 because: (no reason given)