this post was submitted on 11 Feb 2026
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Today I Learned (TIL)

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[–] whyNotSquirrel@sh.itjust.works 24 points 4 days ago (1 children)

I really don't like this, and not for the rational reasons

I keep picturing them in my eyes and nose (weird wired brain)

[–] KoboldCoterie@pawb.social 44 points 4 days ago (3 children)

Although the dispersed needles in the second experiment removed themselves from orbit within a few years, some of the dipoles that had not deployed correctly remained in clumps, contributing a small amount of the orbital debris tracked by NASA's Orbital Debris Program Office. Their numbers have been diminishing over time as they occasionally re-enter. As of April 2023, 44 clumps of needles larger than 10 cm were still known to be in orbit.

They're still up there. If they somehow survived re-entry, they could hit you. You could be innocently looking up and all of a sudden - copper needle from space, right in the eye.

[–] TwodogsFighting@lemdro.id 26 points 4 days ago (1 children)
[–] CmdrShepard49@sh.itjust.works 5 points 4 days ago

I was two days away from retirement!

[–] TheDoctorDonna@piefed.ca 13 points 4 days ago

Better than a toilet seat.

[–] 4am@lemmy.zip 2 points 4 days ago (1 children)

I don’t know if they could descend from MEO into the atmosphere and not eventually vaporize from heat ablation before slowing enough to re-enter. Copper ain’t gonna withstand those temps.

[–] KoboldCoterie@pawb.social 9 points 4 days ago

Even if they did, the chance of one of them landing on someone's eye is so astronomically low as to be functionally 0% - but that's not the point! The point is to jokingly play into someone's unreasonable fear of orbital copper needles! Work with me here.

[–] mech@feddit.org 21 points 4 days ago (2 children)

What surprises me the most is that objects in medium earth orbit (no atmospheric drag) re-entered within 3 years, only from the pressure of the sun's radiation.

[–] Dionysus@leminal.space 11 points 4 days ago

Yeah, that's what makes the concept of a solar sail so neat. Eventually hitting near light speed doing that.

[–] subignition@fedia.io 2 points 4 days ago (1 children)

The Sun is an angry laser

And with enough laser you can push

[–] Atelopus-zeteki@fedia.io 2 points 3 days ago (1 children)

Yes, well, except for the "laser" part. And also the part about angry; one needn't anthropomorphize a natural phenomenon. The Sun is.

[–] subignition@fedia.io 3 points 3 days ago (1 children)
[–] MyMotherIsAHamster@lemmy.ca 20 points 4 days ago (1 children)

That's wild, I had never heard of this.

[–] xylogx@lemmy.world 32 points 4 days ago

They created an artificial ionosphere and were able to successfully bounce radio comms off it. Totally wild.

[–] Assassassin@lemmy.dbzer0.com 16 points 4 days ago (1 children)

99.9% accuracy

Don't ask about the .1% or else

[–] jaselle@lemmy.ca 3 points 4 days ago (1 children)

I'm not sure they actually shot that many before cancelling the project

[–] Quilotoa@lemmy.ca 3 points 4 days ago

Yeah, I couldn't see in the article how many went up. I seem to have read somewhere it was in the hundreds of millions.