this post was submitted on 06 Nov 2025
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California-based startup Reflect Orbital aims to build a swarm of 4,000 giant mirrors in low Earth orbit to "sell sunlight" to customers at night. Experts warn that the mirrors could mess with telescopes, blind stargazers and impact the environment.

Reflect Orbital, which was founded in 2021, has recently taken the first step in a scheme to sell sunlight at night by bouncing solar rays off giant "reflectors" that can redirect the vital resource almost anywhere on our planet. By doing this, the company aims to extend daylight hours in specific locations, thus allowing paying customers to generate solar power, grow crops and replace urban lighting.

But experts say it is a wildly impractical plan that should never get off the ground. What's more, the resulting light pollution could devastate ground-based astronomy, distract aircraft pilots and even blind stargazers.

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[–] YaDownWitCPP@lemmy.world 2 points 1 month ago

"Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."

[–] JensSpahnpasta@feddit.org 2 points 3 weeks ago

Let's be honest: This is military technology camouflaging itself as civilian tech. It totally doesn't make any sense for the proposed uses, but it totally is worthwhile for military purposes. Jihadist sneaking up onto your base in Bagdadh in the night? Light up the sky! Russian drone attack when it's dark? Light up the sky! That border to north korea? Eternal sunshine! Your B2 and B52 bombers are on the way? Confuse your enemy by switching the sun on and off! Protect your convois by always have them drive in the night!

[–] JoshuaFalken@lemmy.world 1 points 1 month ago

This reminds me of the venetian shade idea. 'Trillions of dollars' hahaha okay let's see who wants to pitch in.

[–] CovfefeKills@lemmy.world 1 points 4 weeks ago

This is not just simple bullshit this is part of a greater Solar Radiation Modification effort and is highly likely to actually become a thing because we are going to block the sun we aren't going to stop using oil.

Reflect Orbit 2.0 Hacker Edition:

Move corporate HQ to Russia, place mirrors in orbit to block sunlight, then charge big $$$ to unblocked it. Profit.

Whatever happened to the 12 Jasons? They used to stop things like this. I imagine they were disbanded by the regime.

[–] jaybone@lemmy.zip 1 points 4 weeks ago (1 children)

If we could actually do this, couldn’t we also send up large Sun ray blockers that would help us control global warming?

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[–] MattTheProgrammer@lemmy.world 1 points 4 weeks ago

[johnny silverhand noises intensifies]

[–] GuyLivingHere@lemmy.ca 0 points 4 weeks ago

Yeah, mirrors seem like a huge problem. Why not go with photovoltaics - a decades-old, proven technology, and just beam energy to a ground-based storage facility to be used later?

I know some amount will be lost in conversion and transmission, but you could still have underground facilities in cities providing extended daylight for good reasons, like to help people with seasonal affective disorder, or to grow crops out of season.

[–] beemikeoak@lemmynsfw.com -1 points 4 weeks ago

Astronomers cannot warn at 2000C! Mhaaa ha ha ha ha ha!

Astronomers can barely warn even at 100C! Ha ha ha mha haha ha!

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