this post was submitted on 06 Sep 2024
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[–] athairmor@lemmy.world 108 points 2 months ago (3 children)

This has scam written all over it. Might as well throw in a monorail.

[–] Reverendender@sh.itjust.works 27 points 2 months ago (1 children)

I hear those things are awfully loud.

[–] odigo2020@lemmy.zip 26 points 2 months ago (1 children)

It glides as softly as a cloud.

[–] superkret@feddit.org 14 points 2 months ago (1 children)

Is there a chance the track could bend?

[–] ScrotusMaximus@lemm.ee 13 points 2 months ago (1 children)

Not on your life, my Feddit friend.

[–] Glytch@lemmy.world 11 points 2 months ago (1 children)

What about us braindead slobs?

[–] odigo2020@lemmy.zip 10 points 2 months ago (3 children)

You'll be given cushy jobs!

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Absolutely. Another deranged idea from another idiot asshole from the techbro community.

[–] brianary@startrek.website 4 points 2 months ago

Literally the opposite of what Mr Burns did.

[–] ravhall@discuss.online 67 points 2 months ago (1 children)

Because that won’t fuck with nocturnal animals at all….

[–] ShaggySnacks@lemmy.myserv.one 70 points 2 months ago* (last edited 2 months ago) (1 children)

Who cares about the environment! We have investors to grift! Money to be made!

[–] kata1yst@sh.itjust.works 21 points 2 months ago

It won't actually work. So yes, this is just a grift until funding dries up.

[–] PrincessLeiasCat@sh.itjust.works 51 points 2 months ago (3 children)

In the demo, former SpaceX intern and startup cofounder Ben Nowack is shown using an app outside in the dark that seems to control the location of the company's sunlight-reflecting mirrors. As he selects the spot where he stands, the area around him is suddenly illuminated as if by stadium lights.

LMAO of course it’s a SpaceX intern’s idea.

[–] kamenlady@lemmy.world 16 points 2 months ago* (last edited 2 months ago) (1 children)

Yeah, it's boring.

I want a Starliner intern to come up with something.

Btw, Starliner undocked the space station, set course back to earth and must have landed, uncrewed, 2 - 3 hours ago. That was the plan, at least.

Edit: Here it is after undocking the station, showing off it's glorious thrusters:

[–] Zipitydew@sh.itjust.works 8 points 2 months ago (1 children)

Hasn't made it to re-entry burn yet. That's scheduled for about 40 minutes from now. Is supposed to land around 10 pm New Mexico time. Or about 2 hours from now.

[–] kamenlady@lemmy.world 3 points 2 months ago (1 children)

The touchdown

Seems like both Astronauts would have made a safe return after all.

[–] Mirshe@lemmy.world 4 points 2 months ago (1 children)

To be fair, if I'm NASA, who's had two fatal incidents with known damaged spacecraft, I'm also not sending two astronauts down on a known damaged spacecraft.

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[–] tal@lemmy.today 9 points 2 months ago* (last edited 2 months ago)

it’s a SpaceX intern’s idea.

It's older than that.

https://en.wikipedia.org/wiki/Space_mirror_(climate_engineering)

Space mirrors are satellites that are designed to change the amount of solar radiation that impacts the Earth as a form of climate engineering. The concept was first theorised in 1923 by physicist Hermann Oberth[1][2][3][4] and later developed in the 1980s by other scientists.[5] Space mirrors can be used to increase or decrease the amount of solar energy that reaches a specific point of the earth for various purposes. They have been theorised as a method of solar geoengineering by creating a space sunshade to deflect sunlight and counter global warming.[5][6]

There have been several proposed implementations of the space mirror concept but none have been implemented thus far other than the Znamya project by Russia due to logistical concerns and challenges of deployment.[5][7]

The Znamya project was a series of orbital mirror experiments in the 1990s that intended to beam solar power to Earth by reflecting sunlight. It consisted of three experiments the Znamya 1, Znamya 2 experiment, and the failed Znamya 2.5. The Znamya 1 was a ground experiment that never was launched.[17] The Znamya 2 was the first successful launch the Znamya project had. It was attached to the unmanned Progress M-15.[17]The deployment resulted in a bright light of a width of 5km and with the intensity of a Full Moon being shined.[17] The Znamya 3 was proposed but never acted upon because of the failure of the Znamya 2.5.[17] The project was abandoned by the Russian Federal Space Agency after the failed deployment of the Znamya 2.5.[7]

[–] Valmond@lemmy.world 4 points 2 months ago

Dude, I read about it in a 1990 donald duck (true actually, +/- some years).

[–] HeyThisIsntTheYMCA@lemmy.world 48 points 2 months ago (1 children)

can I buy sunlight to point at someone I don't like for say, a month? no reason.

[–] AlecSadler@sh.itjust.works 19 points 2 months ago (1 children)

This. This I could get behind.

[–] HeyThisIsntTheYMCA@lemmy.world 5 points 2 months ago

my neighbor ran a jackhammer for three months every day trying to build a pool. I say three months of no darkness at night is fair retribution.

[–] SuiXi3D@fedia.io 29 points 2 months ago

Ah yes, let’s redirect sunlight ONTO the Earth instead of away from it. Global warming isn’t real, after all.

/s

[–] Tylerdurdon@lemmy.world 27 points 2 months ago

You better hope you're not a customer's neighbor.

[–] Chef_Boyargee@lemmy.world 25 points 2 months ago (1 children)

No way this doesn’t end poorly. I’m envisioning the SOL laser from Akira.

[–] Tolookah@discuss.tchncs.de 23 points 2 months ago

I imagined Mr Burns blocking out the sun, charging for sunlight.

Also I thought about who I would deliver middle of the night sunlight to, definitely not out of spite.

[–] LostXOR@fedia.io 20 points 2 months ago (1 children)

Hahahahah-

Wait... They're serious?

Does anyone really think this could actually work? A LEO satellite would have to be massive (>1 km) to reflect a significant amount of sunlight, and you'll need to put it waaay higher to avoid atmospheric drag. Not to mention the problem of the satellite only being above a given location for a few minutes a couple times a day.

[–] dual_sport_dork@lemmy.world 11 points 2 months ago (1 children)

This right here. Never mind the dystopian Mr. Burns style subscription based sunlight control bullshit that's inherent to the very idea. That's just to sucker in the investors who won't know any better. Not enough people are talking about this.

I guess they could try to put the thing into some kind of geosynchronous orbit, but essentially the surface area of their mirrors will have to be equivalent to the area on the ground they plan to illuminate in order to achieve "sunlight" levels of illumination. There's no way around that. So motherfuckers are going to start spouting off about "parabolic dishes" and "lenses" and shit any minute now. This is a red herring. No amount of optics can overcome the fact that the amount of light you can reflect will never be more than the amount of light that hits the mirror. Period. You cannot, now or ever, defy the laws of physics.

The International Space Station is basically the biggest thing we've ever managed to permanently put into orbit, yeah? And you can barely see it with the naked eye in the night sky, let alone measure any meaningful amount of light reflected off of it hitting any square inch of ground anywhere, with any instrument you can come up with. And it's covered in reflective shit already -- in fact, most manmade orbital objects are, in order to prevent the direct sunlight baking the fuck out of them in the vacuum of space where they can't rely on the atmosphere to carry the heat away.

At best, even if they manage to deploy a massive Mylar foldable mirror in orbit that's hundreds of feet across, they're only going to be able to light up a small patch of dirt like wussy old moonlight, and even then they'll only be able to do it in one place. Adding more targets will by necessity divide the light output in a linear fashion even if they somehow make it work like a huge DLP mirror array.

This simply can't work.

[–] magiccupcake@lemmy.world 3 points 2 months ago (3 children)

It's certainly a stupid idea if your trying to illuminate at the suns level, but if you wanted an area to have permanent moonlight? Not so unreasonable.

The moon is 400,000 times dimmer, so 1km^2 of mirror, which is ridiculous, could illuminate an area the size of Germany.

New York metro area is 12,000km^2, which would only need a mirror 173m on each side.

Actually might not be a bad tourist attraction for a crazy city, permanent artificial moonlight.

[–] dual_sport_dork@lemmy.world 4 points 2 months ago

Granted, but if moonlight level is all you want I can already illuminate my surroundings to that benchmark with the flashlight in my pocket. We don't need to park shit in space to accomplish that. And as a matter of fact, we already tried the "illuminate the entire town like the moon" model in the past as well. It turned out that even on a terrestrial scale it wasn't actually a great idea because, you know, people in the vicinity who want to maybe turn it off... can't. (Except in the latter case, maybe with the aid of a rifle.)

I am positive this is just an investor scam of some kind. If anyone is actually stupid enough to launch anything towards this end, it's a mathematical certainty that they will be murdered in the street by either an amateur astronomer or a chiropterologist. It'll be a toss-up who gets to him first.

[–] LostXOR@fedia.io 4 points 2 months ago (2 children)

Some calculations:

In a 1000km orbit, you'll need a mirror about 9km across to appear 0.5° in diameter from the ground (the same size as the Sun), and therefore light up an area with the same illumination as the Sun.

Note that you can't make due with a smaller mirror focused to a tighter area, as the brightest thing the mirror can reflect is the Sun, and so it must appear at least as large as the Sun in the sky to illuminate any point on the ground by the same amount.

With the much dimmer goal of moonlight illumination levels, the mirror shrinks to 9km / sqrt(400,000) = 14.2m in diameter, which is actually rather reasonable. However it would only illuminate an area 0.5° wide from the mirror's point of view, or around 9km. And because the mirror is orbiting at 7.4km/s, you'd only get a second or two of illumination.

TLDR: Moonlight mirror 14m across, could light up a 9km diameter area for a little over a second.

Edit: In the case of a permanent mirror in geostationary orbit, a 500m mirror could provide moonlight illumination to an area around 300km in diameter.

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[–] nilloc@discuss.tchncs.de 3 points 2 months ago

Until it gets cloudy, foggy, or even just a little hazy anyway.

[–] AI_toothbrush@lemmy.zip 20 points 2 months ago

You mean the moon?

[–] Macaroni_ninja@lemmy.world 19 points 2 months ago

Unless it has AI I'm not interested

[–] Naich@lemmings.world 16 points 2 months ago

Anyone know someone that has bought into this? I've got some magic beans and a bridge to sell them,

[–] VelvetStorm@lemmy.world 15 points 2 months ago (1 children)

This has some real futurama wormstrom energy to it.

[–] GenosseFlosse@feddit.org 14 points 2 months ago (1 children)

Eevblog disagrees.

The catch is that the reflected sunlight from a small area on the reflector will be spread over a very large area by the time is reaches earth, so the energy each panel could collect is to small to make economic sense.

[–] INHALE_VEGETABLES@aussie.zone 3 points 2 months ago (1 children)

Yeah ok but the video... Explain that!

[–] DragonTypeWyvern@midwest.social 14 points 2 months ago (1 children)

Venture capital is composed of in no small part ignorant jackasses playing with other people's money.

[–] Chiarottide@lemmy.world 3 points 2 months ago

Jackasses playing with ignorant people's money*

[–] morriscox@lemmy.world 13 points 2 months ago* (last edited 2 months ago)

This would be great for pranking people into thinking that they are getting abducted by aliens or that God is going to be talking to them.

[–] 200ok@lemmy.world 12 points 2 months ago

Can I pay to point the sun at someone who is making my life miserable? Preventing them from getting a good night's sleep will surely make things better, right?

[–] Snapz@lemmy.world 5 points 2 months ago (1 children)

Oh hey... Look! It's exactly the kind of thing I trust a for-profit tech company with!

Are you as excited as I am to follow the journey of how this leads to you and I paying individual daily subscriptions for basic access to sunlight (and the quality of that sunlight being filtered into multiple premium tiers - light basic, light & heat+, light & heat & UV ultimate++)?

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[–] nothing@lemm.ee 4 points 2 months ago

Climate change 2.0®

[–] bradorsomething@ttrpg.network 4 points 2 months ago

Or, just thinking outside the box here… charge cities for actual nighttime.

[–] AlexWIWA@lemmy.ml 3 points 2 months ago

James Bond Die Another Day ahh post

[–] Summzashi@lemmy.one 3 points 2 months ago

This is literally a totally spies episode

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