Mars did have a global magnetic discipline but, as one scientist put it, the planet's "dynamo shut down" round four.2 billion years ago.
The method of Mars losing its atmosphere then befell over a interval of a few hundred million years between 4.2 billion and three.7 billion years ago.
In the course of this period it used to be hit by severe extremely violet photons from the solar. Until that point water seems to were "abundant and active" on Mars.
Could it happen to earth? ----------Read More
