after the big solar flare; all magnetic (electrochemical) data will disappear.

[xor]

Physical evidence of the situation on CDs during this shock wave watch these results! https://www.youtube.com/results?search_query=cd+microwave

Simurgh; wise bird legend born from their own ashes!
https://en.wikipedia.org/wiki/Simurgh
Simurgh project; softcopy to hardcopy

somebody should find solutions to this possibility!
Let's write on the stones with laser

[xor]

Physical evidence of the situation on CDs during this shock wave watch these results! https://www.youtube.com/results?search_query=cd+microwave

in the scriptures; in the great war depictions; no weapons that provide technological superiority !!!

Right, but beware that most CD-R and DVD-R are made with cheap dyes. I've had carefully-stored DVD-R discs become unreadable after as little as 5 years

If you're going to archive data on optical disks, it's important to get high quality discs--e.g., ones made with azo dye. I am extra-paranoid, so for family photos, family videos, and other important data I use M-DISC for archiving. These disks can theoretically last 1000 years https://en.wikipedia.org/wiki/M-DISC

P.S. Only certain DVD burners can burn M-DISCs because it requires a stronger laser, so you should make sure the manufacturer explicitly says M-DISCs are supported (LG burners tend to support M-DISC). All DVD players/readers I've tested were able to read the discs.

[xor]

Barış Manço - Ce Sera Le Temps (1978) lyrics >> https://lyricstranslate.com/tr/ce-sera-le-temps-it-will-be-time.html

https://www.youtube.com/results?search_query=Bar%C4%B1%C5%9F+Man%C3%A7o+-+Ce+Sera+Le+Temps+(1978)

[gadget42]

According to some guy whose name I can't remember, when a time traveler arrives in the past it splits off an alternate timeline and leaves the original one unaffected, so a time traveler can't change the future he started from (resolves grandfather paradox etc). xor can't know for sure what will happen in the alternate (our) timeline, only what happened in his original one until he left. Still a good idea to guard against solar flares though!

https://farscape.fandom.com/wiki/Wormhole

[xor]

the orbit of the Earth will change depending on a major natural event,
{ The Prophet of Muslims explained this situation (1400 years ago). }