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#satellites#more#space#don#earth#those#right#should#satellite#sky

Discussion (164 Comments)Read Original on HackerNews

nablaxcroissant•about 3 hours ago
I'm not sure how exactly they are making these calculations but I just don't see it. Both Reflect and SpaceX are targeting SSO orbits where they are only reflecting for an hour or two at sunset. That isn't true of Starlink, but that constellation is already up there and if its fine right now, I don't see it getting much worse as the materials on it get refined to be less problematic.

More regulations would just have the result of cementing a monopoly for Spacex.

ben_w•about 1 hour ago
All satellites in LEO only show up at close to sunset (and sunrise): When they're away from the terminator, they're either on the sun-side, and hence you can't see them for all the blue sky around them, or the night-side, in which case you can't see them because they're not lit by the sun because the Earth is in the way.

I'm still checking the maths on how bright a million satellites in a terminator-following SSO would be. I'm getting very big numbers. But then, the (vague and aspirational) suggestions I'm seeing right now for SpaceX are in the 120 kW range, which is huge, and lining up a million of those is enough for a contiguous ring just under 10 meters wide (how much under is "just under" depends both on how efficient the PV is and how high in LEO you go).

Regardless of if they're all in one orbit or spread over in multiple orbits at different shells that are all terminator-following SSO, from the ground you're getting a train of things with somewhat higher brightness than the ISS, with a fairly small apparent separation that (I tentatively think) becomes less than your eyes can resolve at at least one point in the sky (if there's say 50 shells, where those 50 get close to crossing).

upofadown•about 3 hours ago
>SpaceX plans to send one million more satellites into orbit, for space-based data centres, ...

I think we should wait to see how the first satellite data centre works out. It seems fairly unlikely that it could be practical. It seems kind of nuts...

>Reflect Orbital, a US start-up, aims to launch a constellation of very large mirror-like satellites to provide sunlight at night, with reflected beams that span at least five kilometres on Earth's surface.

Straight up nuts with no practical value, even if it did work out.

ggreer•about 2 hours ago
I can think of several practical uses. It would be very useful immediately after a disaster. Lighting up the night would make search & rescue much more effective. It would also allow for more solar power generation in an area, reducing pollution. Extra light at high latitudes in the winter would reduce seasonal depression.

Are they worth the cost/tradeoffs? I don’t know. But there is practical value to lighting up the night.

verzali•about 1 hour ago
It doesn't work out anyway. If you work out how much light these satellites can reflect it is practically nothing and certainly not economically viable. The company seems to be little more than a way to extract money from fools.
chickensong•about 1 hour ago
> Are they worth the cost/tradeoffs?

No. Lighting up the night is an abomination. Reflect Orbital can go fuck themselves.

xadhominemx•about 4 hours ago
I am a science and astronomy fan, but I am sorry, in this case progress is more important. If we regret our decision, the LEOs will fall out of the sky by themselves in a few years and it will be ok.
edelbitter•about 3 hours ago
Some scientific endeavors can be paused and maybe later relaunched, if funding has not dried up and temporarily-worthless machinery has not been left to rot.

But stuff like mitigating the constant threat of big enough objects showing up on a collision course with earth should not be paused until those eye-catchers fall out of the sky. If there is something coming at us that can wipe out more than the stock price of one particularly space-enthusiastic company, we should like to know within a time period appropriate for our current planetary defense capabilities. Which will surely improve, over time - so maybe we can pollute the sky, later.

Legend2440•about 3 hours ago
>the constant threat of big enough objects showing up on a collision course with earth

I don't really think this is a serious risk. This is a once-in-a-million-years kind of event.

Also, asteroid detection is not seriously affected by satellites. We can easily tell the difference between a moving satellite and a moving asteroid because of their speed.

SilverElfin•about 3 hours ago
China’s constellations are going to orbits that will take hundreds of years to return to earth and could make launching much harder if there is a collision. As far as I know only SpaceX has satellites in low orbits that frequently need propulsion to push back up, and fall back within 5 years.
croes•about 3 hours ago
A few years is a large knowledge gap if an asteroid is on its way to us.

Not to mention that’s not how it works. We regret burning so much fossil fuel but those who make huge profits from it prevent as much change as they can.

You can bet Amazon and SpaceX will do the same no matter how the rest of us regrets it

Legend2440•about 4 hours ago
This is a tradeoff we have to make with infrastructure and development in general. How do you balance human needs with pristine nature?

Do we put up long-distance power lines and wind farms even though they ruin the views? Do you tear down a forest to put up farmlands and suburbs? Do you build a dam to provide water for irrigation, even though it kills the fish and floods a valley?

Satellites are actually easier than most of those tradeoffs, because nothing lives in space and there's no nature to destroy. It only affects us.

dgellow•about 2 hours ago
> How do you balance human needs with pristine nature?

How about we set a limit on how many satellites? That’s exactly how to balance

croes•about 3 hours ago
They hinder the view on asteroids coming our way.

The purpose of most of these satellites is internet access where we already have less limited possibilities with less maintenance costs like constant replacement

Legend2440•about 3 hours ago
No they don't. It's more of an issue for long-exposure galaxies and nebula.

And asteroids are an extremely rare threat in the first place. It's literally a once-in-a-million-years kind of event.

JumpCrisscross•about 3 hours ago
> They hinder the view on asteroids coming our way

Source?

michelb•about 4 hours ago
Worrying for sure. But I doubt the current USA, along with Israel and Russia are going to be bothered about this. Everyone is launching satellites and other gear into orbit for war.
johnnyApplePRNG•about 3 hours ago
They're already itching to throw space-lasers into orbit. [0]

I wish I was joking.

[0] https://www.jpost.com/defense-and-tech/article-900854

gordonhart•about 3 hours ago
Interesting that your list omits China considering they have firm plans to launch ~41k satellites for government/commercial constellations plus ITU filings for >200k proposed satellites.
SubiculumCode•about 4 hours ago
Or defense.
sylos•about 3 hours ago
Defense is just a polite term for war.
SubiculumCode•about 2 hours ago
There is this mistaken idea out there that if the U.S. were to disarm, then other nations would also disarm, and the whole world would live in peace. But history tells us over and over that power abhors a vacuum, and were the U.S. to leave the world, another would take its place, probably Russia or China. If we disarmed, then another nation with arms will inevitably invade the U.S.
enoint•about 1 hour ago
What should the ratio be of missiles to missile interceptors?
arjie•about 4 hours ago
These kinds of caps have for years been a dampener on human flourishing. My observation has been that those in stagnation or decline tend to attach themselves to these desires to hold the status quo. Anti-energy, anti-housing, anti-industry and so on because they've reached a local maxima in their ability to live and have chosen to spend their life in leisure.

But there is the rest of the world, and if I'm told that the Africans should not have access to high-speed satellite Internet[0] so that the Europeans can use one specific method of looking at the stars, I don't find that convincing. In time, as we expand, space-based observation will become fairly feasible for everyone. And the satellites we have will decay to the Earth should we fail to keep them up there.

We will build Earth orbital structures and swarms, and we will build Sun orbital structures and swarms, and we will go to the stars, and it will be better for humanity as a whole.

0: https://www.economist.com/middle-east-and-africa/2026/07/02/...

Normal_gaussian•about 3 hours ago
I think that "Africans should not have access to high-speed satellite Internet" is something you've just made up; the article you link talks about African people turning to Starlink because of local infrastructure issues, and the original article notes that the current satellite count is currently around 14k satellites. 100k is more than enough satellites to provide high-speed satellite internet globally.

The article makes mention of specific endeavours, like the night-time mirror satellites, which are particularly disruptive to astronomy, and the general risks of high numbers of satellites.

The ability to do Earth based astronomy is something that is of value to all the peoples of Earth, and is mainly funded by the western nations because of their current position as the people with more money.

JumpCrisscross•about 3 hours ago
The article doesn’t consider that in a world with a million satellites in orbit, launching space-based telescopes—including into deep space—becomes an order of magnitude cheaper.
acdha•about 3 hours ago
Does it? My understanding was that it’s less helpful for anything which isn’t in low-earth orbit because the commercial launch engineers are optimizing for the lucrative satellite business, not larger and higher payloads.
onion2k•about 2 hours ago
Google says that James Webb telescope cost a total of $10bn. That's not a lot of money in the grand scheme of things. Private citizens could afford to put similar things into space if they chose to. We don't need them to be cheaper.
ben_w•about 2 hours ago
Currently writing a draft blog post on all the issues (and non-issues) with these things, it is now long enough (7k words) I'm slightly wondering if it's less "a blog post" and more "one section of a decent sized book on why we can't have nice things".

Here's a visual to consider the implications of things you can do with actually one million satellites of the kind of size scale being discussed:

https://raw.githubusercontent.com/BenWheatley/blog/refs/head...

rcxdude•about 3 hours ago
Not to mention starlink is not a solution for internet for everyone on the planet: it cannot serve everyone in a densely populated area, no matter how many satellites they have in their constellation. It's a useful piece of infrastructure, but it's far from the panacea people seem to think it is.
ethin•about 2 hours ago
Starlink is already over-congested and physics says that it is not possible to scale it up to serve 100000000 subscribers let alone 5-6 billion or more. We would need some kind of physics breakthrough for that to scale properly, and I'm not even sure if physically it would even be possible to do that no matter what you threw at it. Starlink isn't magic as a lot of people seem to think it is.
fc417fc802•about 2 hours ago
> it cannot serve everyone in a densely populated area,

I also suspect that to be the case but in order to be more objective I wonder. What's the theoretical maximum bandwidth per square meter (or other unit area) that it can deliver?

IncreasePosts•about 3 hours ago
Ground based infrastructure is much easier to justify in densely populated areas. So, dense areas get ground infra, and the dispersed rural population can get satellite infra
ck2•about 3 hours ago
note that including dead things in orbit

(that we currently have no way to remove)

is actually 32,000 not just 14,000

what we need is the investment for "space roombas" that go around bumping things out of orbit that are dead or did not de-orbit properly

the problem is all that atmospheric burnup creates a lot of toxic pollution

* https://www.bloomberg.com/graphics/2025-space-orbit-satellit...

JumpCrisscross•about 2 hours ago
> we currently have no way to remove

Nature takes care of this for us in LEO. I’ve seen no serious plans to put millions of anything anywhere else.

solid_fuel•about 2 hours ago
> These kinds of caps have for years been a dampener on human flourishing.

I don't think blocking the view of the night sky is necessary for "human flourishing", actually. Your attitude reminds me of the Victorians, who saw their coal-smoke filled skies as a sign of virtuous progress.

More reasonable minds prevailed, in the end, and now most people have a more balanced view - with the understanding that progress and industry must be balanced with the ecosystem we live in and depend upon for life.

tekne•about 1 hour ago
Controversial opinion: at the time, it was.

To be able to live well now with much less of that may not have been possible without the sacrifices that came before.

piloto_ciego•about 3 hours ago
As a literal leftist by any reasonable metric, the recent trend towards “I wish it was 1995” and “AI is the worst” and “tech sucks now” from people I agree with on many other points frustrates me to no end.

“You guys know we could basically live in a Star Trek style utopia if we get this right, right?”

“The DATA cenTERS are STEALING the water and breaking Taleckshual ProPerty LERRS!”

Like, I thought we were for piracy, and against capital colonizing the space of creative ideas? But I guess what a lot of people were fond of was feeling important.

hack1312•about 3 hours ago
“if we get this right” is doing a whole lot of heavy lifting here.
piloto_ciego•about 2 hours ago
But that’s the thing! We could and we can!
piperswe•about 3 hours ago
If politics were trending left I’d agree with you, but as-is the bourgeoisie are the only ones that will get any upside from modern tech.
matthewdgreen•about 3 hours ago
Even Star Trek admits that there are horrible events that lie between our world and the utopia.
piloto_ciego•about 2 hours ago
then perhaps we should strive not to have those horrible events, not by having nostalgia but by dreaming of a better future.
tsunagatta•about 3 hours ago
AI is not going to give us a star trek utopia, AI is an attempt by the bourgeoise to alienate the average person from the capital that has previously always come free with their human life. AI promises a feudalist future where there is no capital that isn't owned by the ruling class. Its power is not democratized, it is concentrated in the hands of those building the data centers. That is why I'm against the data centers. I feel like all leftists should be.
ben_w•about 2 hours ago
> AI promises a feudalist future where there is no capital that isn't owned by the ruling class.

We may get that, but only if the ruling class want what the Victorians called a "folly": https://en.wikipedia.org/wiki/Folly

AI is wildly, wildly divergent in the possible futures it brings. It's really important to influence what happens, but don't limit the potential downside to only as bad as feudalism (neither neo-feudalist nor re-enacted): much worse monsters exist than the typical feudal lord.

(Was going to say "among those rulers who needed us alive to fight their wars and grow their food", but then I remembered Cambodia and Pol Pot).

JumpCrisscross•about 3 hours ago
> Its power is not democratized, it is concentrated in the hands of those building the data centers. That is why I'm against the data centers

If you really believe this (and I’m not saying I don’t, I just don’t have confidence in it), blocking domestic. datacenters doesn’t preserve that labour value. It just ensures whoever builds those datacenters controls production from afar.

Like, if AI really replaces human labour, does Africa and Europe having few AI datacenters protect it from America and China? Of course not. Not outside a symbolic level that even then would have to exist with the implied consent of the powers who produce.

ben_w•about 2 hours ago
Mm. I know a (US) Green party campaigner who is a self-described communist (I forget which variety), who has yet to realise the contradiction between her love of trade unions and support of the environment when it presents itself in support of the famous UK coal miner's strikes.
afpx•about 2 hours ago
In 1990 I hoped my grandkids would be able to join starfleet. After watching most of the gains go to the worst, I just hope they can escape the borg.
ben_w•about 2 hours ago
I was a kid in the 90s. Kinda surprised we got the (almost) universal translator before we got fusion.
tadfisher•about 2 hours ago
In Star Trek canon, humanity figured out how to live in utopia by destroying all existing power structures in a Third World War.

What is happening now is we have all our existing structure, and the existing requirement to earn money to live within this structure, and the human creative output we want in our eventual utopia is used to train automata with the express goal to replace humans in those creative endeavors, removing the ability for humans to earn money by being creative themselves.

It is not hard to see things from this perspective when a significant portion of writing is becoming obvious slop, and your liberal friends are having a hard time getting hired or landing writing deals or selling artwork. I would feel less important too; I'm already feeling this way when I review a PR with obvious LLM-generated descriptions and comments that reference the prompt.

Ideally, feeling important wouldn't be pejorative. Ideally, we'd have a way for artists to have food and shelter and continue to produce art. The hopes that AI will cause this to happen are equivalent to hoping WWIII will come along and wipe out 2/3 of humanity so we can start over with United Earth and warp drives and replicators.

piloto_ciego•about 2 hours ago
> In Star Trek canon, humanity figured out how to live in utopia by destroying all existing power structures in a Third World War.

Perhaps we could try to destroy those power structures without having a giant war lol, just saying.

> What is happening now is we have all our existing structure, and the existing requirement to earn money to live within this structure, and the human creative output we want in our eventual utopia is used to train automata with the express goal to replace humans in those creative endeavors, removing the ability for humans to earn money by being creative themselves.

Right, I get the frustration, but how many "creators" were doing truly creative and expressive work writing ad copy or making up logos for shoe companies or whatever. The problem people have is capitalism, not the robots and it's short sighted of people to be angry at software tools rather than the system that has forced them to trade their time and skills for the right to exist.

I've literally lost my career before. The one thing that getting deathly ill has taught me is that "all things will come to an end." Someday, that will include me, but hopefully not today, and thanks to modern medicine, hopefully not any time soon. The idea that the only way an artist should be able to justify their right to survive is by shitting out jpgs on fiverr or whatever is as absurd as the idea that that was somehow meaningful work. If you're having a hard time getting hired, pivot. Adapt. Overcome. That's been my life for the last decade since I first got sick - and I'm not saying it's great, but you have to be able to adapt to new istuations. The world ain't going back. Do we become the Luddites and lose in the long run? Or do we "seize the means of computation and build something that strives for utopia?"

> Ideally, feeling important wouldn't be pejorative. Ideally, we'd have a way for artists to have food and shelter and continue to produce art.

I think food and shelter should be available for anyone on earth without any sort of need to justify it. But I do think that feeling really important should be a bit pejorative.

> The hopes that AI will cause this to happen are equivalent to hoping WWIII will come along and wipe out 2/3 of humanity so we can start over with United Earth and warp drives and replicators.

That's a false equivalency. Like, not even on the same planet.

AngryData•about 3 hours ago
The problem is people don't see the near future as a Star Trek utopia, they see it going more towards a dystopian landscape with handfuls of extremely wealthy elite dictating how they can live their life.
brandensilva•about 2 hours ago
It's easy to see why people fear AI when our leaders talk of a future where many are jobless and replaced with no solutions to fill in the gaps.

AI adoption is a leadership failure more than a tech one right now. If you make people feel empowered with it, it can liberate work-free lives that humanity benefits from. If you use it to destroy people's livelihoods with no options it's not going to survive a revolution.

CookieCrisp•about 3 hours ago
Which would make sense if they chose strategies that might stop that from happening. Instead the ones I know refuse to even learn what AI can do and refuse to see that they're not going to slow it's adoption down by sealing themselves off.

The world was already heading towards a dystopian landscape without AI. So many people on this planet live in a horrific dystopia right now, and here comes along something that might help them. Might give us what we need to stop global warming. I'd rather choose something with a 1% chance of working out than what we had before, 0%.

SidewaysView•about 2 hours ago
God you techbro dorks are so fucking annoying.

Kill. All. Trekkies. Now!

phikappa•about 2 hours ago
I think we'd be better off limiting whom to kill to one person only.
piloto_ciego•about 2 hours ago
Why exactly are you here?
matthewdgreen•about 3 hours ago
I didn't understand what these satellites were really like until I visited Zion National Park two weeks ago. Zion is an International Dark Sky park, and so I was really looking forward to seeing the stars. Instead we sat outside and watched dozens and dozens of fast-moving stars zip around on all sorts of trajectories. I'm not saying it ruined the experience (I'm not an astronomer, and it was kind of fun.) But it really brought home how fundamentally we've changed the sky. I also hope we're able to lay enough fiber in developing countries that this many satellites don't need to stay up there forever.
phainopepla2•about 2 hours ago
I had the same experience visit Mojave National Preserve. It was very distracting while trying to stargaze. I had to stay up late to see the night sky I remember
qntmfred•about 2 hours ago
for reference https://x.com/Jeremyrand101/status/1981564984154005876

I frequently hang out in my driveway in the early evenings shooting basketball and listening to podcasts. I'll see easily several dozen satellites over the course of the hour or two that I typically stay out there. and I don't even live out in the country or anything. I think mostly people are just not aware (yet?) of how rapidly the number of satellites have grown in the last couple years.

verdverm•about 3 hours ago
What time were you there? My understanding is that around dawn/dusk, the angles cause reflection, but for most of the time they are not visible.

Also, what about planes? Those also cause similar light streaks. Another understanding I currently hold is that there is already a method for removing these artifacts

pfisch•about 2 hours ago
How can anyone see what is happening in Ukraine and not realize the future is not just 1 starlink, but also a Chinese one and a Europe at a minimum. Probably many other countries will make sure to have at least a regional one as well though.
JumpCrisscross•about 2 hours ago
I could absolutely see Europe Greenpeace-nuking its way out of having a LEO constellation while everyone else builds them.
gordonhart•about 3 hours ago
In related news, earlier this year Chile cancelled plans for a gigawatt-scale solar/wind powered hydrogen production plant nearby the ESO facility in the Atacama desert after light pollution complaints from European scientists.
isatty•about 3 hours ago
Well, if you build too many satellites in the swarms, at some point you will lose the ability to see or go to the stars.
hombre_fatal•about 2 hours ago
This is a good point.

A similar thread that links your examples together is how we all want to be the last person up the ladder. The last person to move into some neighborhood or into the last apartment complex. Or into a country. The last person to have internet access. Now we want to freeze how it is. Everyone after us threatens our experience.

An American with access to good internet for decades is annoyed that their stargazing session isn't what it used to be now that the city is growing and creating more light or that other people are getting to tech up.

bluegatty•about 1 hour ago
Rubbish. Its 99% of the time people trying to make money and that's it.

As though Africans aren't interested in the stars, or climate change, or that they can't figure out fibre optics is borderline racist.

Europe - and soon the rest of us - are facing massive heat waves that are likely driven by climate change, it's a real problem.

That's 'actual science'.

By all means, build what you like, but you don't get to dump your externalizations on everyone else. There is no 'We' in your projects, you don't speak for us.

pshirshov•about 3 hours ago
> we will build Sun orbital structures and swarms,

Another episode of arrogant fantasy in the ponyworld.

SidewaysView•15 minutes ago
Hear, hear! Promote this man!

Shut these ridiculous baboons out of society. Take their TESCREAL libertarian nonsense with them.

JBorrow•about 3 hours ago
Moving all of astronomy to space based observations is entirely incompatible with the way that instruments are funded, built, and deployed. It is only valid for a set of highly specific and well funded observatories that take decades to get off the ground and can never be updated, improved, or modified to search new scientific directions.

Why don’t “we” just build more cell towers?

JumpCrisscross•about 2 hours ago
> Why don’t “we” just build more cell towers?

Why is littering our landscape with cell towers and power and fiber lines inherently better than putting this stuff in space?

stouset•about 2 hours ago
Google “Kessler syndrome”.
kibwen•about 3 hours ago
> These kinds of caps have for years been a dampener on human flourishing. My observation has been that those in stagnation or decline tend to attach themselves to these desires to hold the status quo. Anti-energy, anti-housing, anti-industry and so on because they've reached a local maxima in their ability to live and have chosen to spend their life in leisure.

This kind of attitude has for millenia been a dampener on human flourishing. My observation has been that those without empathy or foresight tend to attach themselves to these initiatives to obliterate our shared human heritage to satisfy their own ridiculous misconception of progress. Anti-intellectual, anti-curious, anti-social and so on because they've reached a local maxima in their ability to give a damn about what it means to live a good life and have chosen to spend their life in self-satisfied ignorance.

snovv_crash•about 3 hours ago
Maybe a fair allocation of sattelites would be proportional to the number of citizens with voting rights in the country. Maybe with some modifier about how impactful that voting can actually be (eg. citizen initiatives vs. just electing representatives from a preselected pool).
JumpCrisscross•about 3 hours ago
> a fair allocation

Who is doing this allocation? Who is going to tell Pyongyang, Beijing or Moscow they can’t launch anymore?

guelo•about 3 hours ago
If we weren't busy stupidly destroying the institutions for international cooperation, it would be a UN body.
JuniperMesos•about 3 hours ago
As a California resident I really don't like the idea of a legal framework that encourages more citizen initiatives. They would be used to try to prevent building more housing.
rockemsockem•about 3 hours ago
Starlink satellites can provide anyone with Internet.
Normal_gaussian•about 3 hours ago
Can, but won't.
happytoexplain•about 3 hours ago
This is unrealistic, uncharitable, and tribalistic.
browningstreet•about 1 hour ago
The "let builders and capitalists do anything because the future will be better for it" isn't a technically considered position. It's a tautology.
api•about 3 hours ago
“Anti” is a kind of super-meme that took over discourse in a lot of spheres, especially anywhere near academia, starting in the 1970s.

If I had to trace it to one source it would probably be the Club of Rome and Limits to Growth. Paul Erlich would be a close second with The Population Bomb.

Here’s a great podcast on the latter:

https://www.youtube.com/watch?v=Nn1gieFMuWI

This stuff sounds right because obviously you can’t have infinite growth in population or resource use on a finite planet. That means it won’t happen. The question is “how will it not happen?” The answer right now looks like “as people get wealthier they have fewer kids.” There are other possible answers like dematerialization of the economy which is also a thing.

Before the 70s this stuff would have been called far right and identified with ideologies like authoritarian eugenics and fascism. The 70s is when a lot of “volkisch” proto-fascist and crypto-fascist ideas got a lefty hippie makeover. The other big one is the idea that “natural” is inherently good.

I finally see this stuff getting some challenge from all across the political spectrum, even from the left. In previous decades you only ever saw it get challenged from the right or from what were once called libertarians.

umpalumpaaa•about 3 hours ago
And swarms
toasty228•about 3 hours ago
> But there is the rest of the world, and if I'm told that the Africans

When the average African live like the average American we'll be truly fucked, probably even before that. We should raise the bottom for sure but we definitely need to cure the degeneracy of the top too

Technosolutionism is a cult. We either put the caps on ourself or nature will hard cap us anyways, in a much harsher way.

tekne•40 minutes ago
I'll wear the dunce hat if I have to, but I don't want to be an animal. I am one, now, but I don't have to be one. I refuse to be limited by what is "naturally" possible -- my nature is to be a being with a mind, and so the only limit I must respect is the raw laws of physics, whatever they are.

And physics lets me get a lot further than "8 billion Americans."

0-_-0•about 4 hours ago
If we can launch 1M satellites, how many telescopes can we launch?
croes•about 3 hours ago
Who is we? Certainly not amateur astronomers who made important discoveries with their telescopes
tapland•about 4 hours ago
Ugh the part about Munich is depressing. Finding a dark clear sky spot is one of the worlds greatest joys and most awesome experiences.
protortyp•about 3 hours ago
Of course this comes from a European organisation.
manoDev•about 4 hours ago
Should it be possible to coordinate orbits to create permanent clear spots on the sky where observatories are? A LEO no flight zone of sorts.
stouset•about 2 hours ago
It’s not just about where the observatories are. It’s where they want to point to. Good luck figuring out which part of the night sky isn’t important for astronomy.
zoilism•about 4 hours ago
For the first time in human history, the generations living now have been systematically robbed of their ancestral right to witness the night sky and its jaw-droppingly awe-inspiring magnificence.
qntmfred•about 2 hours ago
you can still go outside at night and look up. get a grip.
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mrwaffle•about 3 hours ago
For a very imprecise visual, I like the site https://satellite.love
rho138•about 3 hours ago
It upsets me that an establishment like ESO would grip on the “data centers in space” narrative given the absurd physics constraints.
fc417fc802•about 2 hours ago
Should so many large institutions taking it seriously not give you pause? Cause you to consider that perhaps they're economically viable for a reason you're unaware of? Or even that you could have a misunderstanding about the physics?
patmorgan23•about 1 hour ago
"All the large institutions are doing it" has never resulted in disaster (see the dot com bubble and the great financial crisis).

It seems preposterous that building a data center and

launching it into space would be more practical than building a data center terrestrially. Every problem gets 10 to 100 times harder (Cooling, energy, how are you going to do maintenance on the thing, it's in space?)

The only thing that's easier is you don't have to do any local community engagement.

If a grid connection is the constraint on your project, building an islanded data center with a buttload of solar and batteries seems a lot more feasible than launching it into space. Then you have the option to build a grid connection later and monitize those resourcess.

CodesInChaos•about 3 hours ago
How much CO2 does launching a million satellites produce? Is is significant compared to other sources of CO2?
verdverm•about 2 hours ago
Compare it to air planes, which are already at a much more significant scale. Accounting for fuel type and combustion efficiency seems relevant.

I recall around SpaceX 100th landing, that a day of just transatlantic flights was more than everything SpaceX had done to that point

fc417fc802•about 2 hours ago
Exactly, they don't matter when compared to general aviation or even just consumer shipping.

And in all cases, if you produce the fuel using renewables then the CO2 output is trivially brought near zero.

imhoguy•about 2 hours ago
Wait for LEO EMPs in future conflicts.
rcpt•about 4 hours ago
Why are they bright? Do they have big lights flashing or is it reflection
pwg•about 3 hours ago
Likely because, in space, reflective items don't heat up as much from sunlight as would a dark, energy absorbing, material. Shedding heat in space is a difficult enough endeavor already without also painting your satellite black so it reflects less light (and thereby absorbs more heat).
0-_-0•about 4 hours ago
And what are they reflecting when they are in Earth's shadow?
croes•about 3 hours ago
They aren’t in the Earth’s shadow at the start of the night

> For the SpaceX satellite mega-constellation, he found that dozens of trails would appear in each image taken two hours into the night with ESO’s Very Large Telescope (VLT) at Paranal Observatory in Chile

Not to mention the satellites of Reflect Orbital whose sole purpose is reflecting sun light into night areas

next_xibalba•about 2 hours ago
Fortunately, no one owns space, so we don’t have to listen to these decels.
tiahura•about 3 hours ago
99.99% of the world would rather watch a train of Starlink satellites than some star they couldn't see anyway. Not to mention the satellites' other benefits.
khazhoux•about 3 hours ago
No, only 3.7%
ChrisArchitect•about 3 hours ago
Title is: One million satellites and mirrors in space pose grave threat to the night sky
riazrizvi•about 3 hours ago
Yes okay, good luck with that. The strategic importance to nations is far too high, it just means astronomy will evolve to a thing where it's done from space. But if you want to be the region where you support these ideas and undermine your own political support for national self-interest then that's your choice. Europe is overrun by these professional class types with nice ideas that are misprioritized. It's like a land of people that behave like pets lacking practical self-sufficiency.
zer0energy•about 3 hours ago
I do not understand why the astronomers feel entitled to determine fair use of the sky. I feel like it's much easier and more reasonable to ask what the telescopes can do to mitigate the problem than to insist that others back off from use of the communal resource.

The great observatories are marvels of engineering - a focused effort on technical mitigations to the satellite problem would likely push the problem out for decades into the future.

Two possible paths forward: 1. inserting a shutter into the beam path while a satellite is transiting the field of view of the telescope, or 2. (somewhat worse from an SNR perspective) terminating an exposure right before it's corrupted by a transiting satellite and starting a new exposure once the satellite has passed.

I for one would much rather see effort put into advancing telescope design than blocking advances of our use of space!

ShinyLeftPad•about 3 hours ago
maybe for example because thanks to them we have satellites in the first place?

I agree with this and I'm not an astronomer btw.

vova_hn2•about 2 hours ago
> thanks to them we have satellites in the first place?

What kind of astronomy knowledge is required to launch a satellite?

patmorgan23•about 1 hour ago
Orbital mechanics are pretty important when you're launching something that orbits the Earth.
ShinyLeftPad•about 2 hours ago
idk if I want to list all if it cause it will be very long but let's start with knowing that earth rotates on its axis;)
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ck2•about 3 hours ago
too late

https://satellitemap.space

there are already several starlink competitors and even other countries planning to launch their own 1000-10,000 node networks

holoduke•about 3 hours ago
ah and guess what. only western US / European countries are allowed to have them. The rest are called shadow fleet satellites.
SilverElfin•about 3 hours ago
It’s a public space. No one should be able to just take it over for free. We aren’t being compensated for the pollution of our skies. And also, higher orbits require much longer for debris to fall back and burn up.
chhxdjsj•about 3 hours ago
Perhaps we have 100 years to spread consciousness to space before civilisation is devastated by demographic collapse or nuclear war or some horrible virus or islam.

99.9% of species that have existed on earth are already extinct. Climate change happens constantly over long periods. Our CO2 emissions will be background noise on a million year timescale.

Time to ignore the whingers and the NIMBYs and colonize the universe.