Technology
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This is a pretty embarassing way to open this article:
NASA legitimately has a plan for this, and no it's not crazy, and no it doesn't involve restarting the core of a planet:
https://phys.org/news/2017-03-nasa-magnetic-shield-mars-atmosphere.html
You just put a giant magnet in space at Mars' L1 Lagrange point (the orbital point that is stable between Mars and the sun), and then it will block the solar wind that strips Mars' atmosphere.
Otherwise cosmic rays etc are blocked and interrupted by the atmosphere, not the magnetosphere.
The confident dismissiveness of the author's tone on a subject that they are (clearly) not an expert in, let alone took the time to google, says all you really need to know about how much you should listen to them.
lol... According to your own citation, this wacky scheme was just a talk at some conference. Like the researchers said, it's "fanciful". It's not real.
This is rich coming from someone who posts articles that they didn't read.
Yeah bud, there's also these little shelters called caves.
The author of the article literally guffaws at the prospect of respinning a planet's core when that's not remotely how you would approach that problem.
It would be like writing an article saying "Come on, you believe in vaccines? What, you think a scientist can cut open your individual cells and put antibodies in each one? You really think they have tweezers that small? Get real dum dum."