this post was submitted on 06 Feb 2026
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Science Memes

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[–] T156@lemmy.world 14 points 1 day ago (3 children)

Although they're falling out of use these days, both because they're not very environmentally friendly on account of being instant bird death-rays, and also because regular solar panels are cheap enough that it's not worth it to make a big thermosolar plant.

[–] untorquer@lemmy.world 13 points 1 day ago* (last edited 1 day ago) (1 children)

Habitat destruction, air pollution, and pesticides are unfathomably worse for birds.

[–] A_Chilean_Cyborg@feddit.cl 2 points 12 hours ago

And I'm not sure how much alive things are in the Atacama (except when there is a blooming desert fenomenon.

[–] A_Chilean_Cyborg@feddit.cl 4 points 1 day ago (4 children)

Idk, my country just inaugurated a gigantic one of these.

Also, fotovoltaic pannels decay with time and have to be replaced, 15 years I think? Their manufacturing isn't also the greenest thing on earth.

You build one of these, and you can run it for a long long time.

[–] drosophila@lemmy.blahaj.zone 26 points 1 day ago

15 years I think

This number gets lower every time I see it.

First, manufacturers typically guarantee their panels for 25 to 30 years.

Second, while we can extrapolate from existing data and perform accelerated aging tests, we're actually not completely sure how long PV panels last in the real world because the oldest ones from 1987 are still going.

[–] psud@aussie.zone 8 points 1 day ago* (last edited 1 day ago)

The usual warranty period is 20 years generating 80% of the nameplate generating Watts

They keep generating reasonable amounts of power 50 or 100 years later, though they tend to get overtaken by new technology in 10 to 20 years, and since they pay for themselves in about 4 years in my area they get replaced while still working well

I think we export our obsolete panels to developing nations

[–] asg101@lemmy.blahaj.zone 10 points 1 day ago

fotovoltaic pannels decay with time and have to be replaced, 15 years I think?

much longer: https://www.slashgear.com/1989112/solar-panel-lifespan-longer-new-study/

[–] untorquer@lemmy.world 7 points 1 day ago

Lies! Well the thermal plant is also fine but photovoltaics are really, really good.

https://www.youtube.com/watch?v=KtQ9nt2ZeGM

[–] MousePotatoDoesStuff@lemmy.world 1 points 23 hours ago (2 children)

I wonder if it could be worth it to make one of those on other planets/the Moon one day. No birds to worry about there.

[–] Tja@programming.dev 5 points 21 hours ago (1 children)

Solar panels are still cheaper and easier. Most spaceships and probes rely on them.

[–] MousePotatoDoesStuff@lemmy.world 1 points 20 hours ago

Yea, I should have guessed as much.

[–] PrettyFlyForAFatGuy@feddit.uk 1 points 23 hours ago (3 children)

Not a lot of atmosphere on the moon.

Transmitting heat across distances in effectively a vacuum doesn't work too well.

Just look a the size of the radiators the ISS has to have, and they're not even sending heat anywhere in particular, that's just getting it off station

[–] A_Chilean_Cyborg@feddit.cl 1 points 12 hours ago

Or in the Atacama, the Desertiest desert on earth!

Where the gigantic Cerro Dominador Termosolar Power Plant opened a couple years ago.

[–] Doxin@pawb.social 5 points 22 hours ago (1 children)

You're getting thermal radiation and convection confused. The ISS has giant radiators because it's a right pain in the ass to turn heat into thermal radiation, and it cannot rely on convection to cool things like you can here on earth. Turning thermal radiation into heat on the other hand is pretty trivial. Just don't reflect it and it'll turn into heat. These things aren't transporting heat across distances. They are transporting thermal radiation across distances. That works as well in a vacuum -- if not better -- as it does on earth.

If thermal radiation doesn't work in a vacuum, how is the sun heating anything up?

[–] PrettyFlyForAFatGuy@feddit.uk 3 points 20 hours ago

I stand corrected

[–] Riverside@reddthat.com 3 points 22 hours ago

The mirrors on Earth don't transfer the energy using the air between the mirror and the collector, they just bounce the spicy photons which can travel even better in a vacuum.