Originally shared by Michael Interbartolo
Remember last summer Jim Green and others put forward the notion of placing an artificial magnetic bubble at the Sun-Mars lagrange point to envelope Mars in a the magnetic sheath thus protecting astronauts and potential atmo from solar particles/wind. Well someone took a deep dive on the math and design. It is doable but needs a fission reactor and only 3 BFR launches to put it all in place.
TLDR:
with nothing more than ~300 tons of material and some human ingenuity, Mars could once again boast a firm line of defense against solar winds. Such a field would allow for an atmosphere to be grown around the planet without the threat of being stripped away, and an ozone layer to defend against high energy UV light. Electronic devices and biological entities on Mars could finally be safe from the endless barrage of protons and electrons careening from the sun.
https://medium.com/@brandonweigel/an-artificial-martian-magnetosphere-fd3803ea600c
https://medium.com/@brandonweigel/an-artificial-martian-magnetosphere-fd3803ea600c
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