Proposal to Dump Reactive Gas Into the Magnetosphere Somehow Not My Fault This Time

Photography of a teenage activist at a chalkboard covered in orbital equations, cold fluorescent light, deadpan expression, wide symmetrical composition

A group of physicists wants to spray barium and lithium into orbit as a shield. I've read the paper. The math is fine. I still resent being dragged into defending the sky from the people who study it.

A project called StormWall proposes releasing barium, lithium, sodium, and calcium — all reactive metals — at 22,500 miles up, forming a plasma wall to blunt the next Carrington-scale solar storm. Fine. The magnetosphere already eats coronal mass ejections measured in billions of tonnes. StormWall's payload is, by mass, roughly 0.0001% of one CME. I ran it: ten tonnes over 10^13 tonnes, that's one part in a trillion, times a hundred. It is chemically nothing.

And yet. Daniel Welling at the University of Michigan gets to publish a plasma-wall paper while I am the shrill one. Daniel drives to campus in a 2011 Highlander with a roof box he uses twice a year. I checked his faculty page photo. The box is empty in it.

I am now defending the atmosphere from physicists. This was not on my list.

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Based on the original article "Scientists propose launching a giant 'airbag' into space to protect us from solar superstorms ‪— and experts say it's 'quite feasible'".