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For the people talking about space pollution and problems for astronomers. Yes, it is definitely an issue, but this constellation is also a way for many people
by ShockedUnicorn 6y ago
For the people talking about space pollution and problems for astronomers. Yes, it is definitely an issue, but this constellation is also a way for many people to have access to education and information that will help them and their community.
If you're curious about both the positives and negatives of Starlink I highly recommend the mini documentary "Is this the END of Astronomy?" - https://www.youtube.com/watch?v=TifUa8ENQes https://www.youtube.com/watch?v=TifUa8ENQes
Most things in life are like this. Wind turbines are a great way to supply green energy, but building them takes a lot of energy. So it is important to also think about things like using low co2 concrete, and making them more efficient. They also kill many birds, but this is nothing compared to the amount of birds that cats kill. And engineers are working on ways to get fewer birds killed.
- eecc 6y agoYeah, apparently just paint one rotor blade differently to make it stand out and birds will stay clear [1] Maybe Starlink constellations will be an incentive to finish the JWT, and other space telescopes... [1] https://arstechnica.com/science/2020/08/black-paint-on-wind-turbines-helps-prevent-bird-massacres/ https://arstechnica.com/science/2020/08/black-paint-on-wind-...
- heavyset_go 6y ago> Yeah, apparently just paint one rotor blade differently to make it stand out and birds will stay clear [1] The study you're citing was only studied 4 wind turbines, while the evidence does point towards this working, I wouldn't say that the existing evidence is conclusive. Also, the turbines with the darker blades still killed birds, just less bird than the turbines with standard blades.
- biotinker 6y agoWind turbines don't kill enough birds to be more than a drop in the dead-bird bucket. It's a talking point used by people who were looking for reasons to be against wind turbines, but housecats kill four orders of magnitudes- not 4x, 10,000x- more birds each year. The percent of human-caused bird deaths due to wind turbines is smaller than the percent of Americans dying in airplane crashes each year, compared to all US deaths each year.
- heavyset_go 6y agoI agree, but I disagree about the claims that were made by the poster whose post I was responding to.
- mschuster91 6y agoThe species of birds that get killed are different. Wind turbines kill bigger birds, cats kill small songbirds. Both are a non-negligible factor for their respective species.
- adgjlsfhk1 6y agoWindmills generate more than 1% of power. Thus if you scale up the wind turbines by 100x (to cover more than all power generated over the world), they still kill over 100x fewer birds than cats.
- ffggvv 6y agoseems disingenuous to compare the raw numbers of deaths when windmills still aren’t very common but you want to make them far more common. not saying i disagree with your point overall but not a fan of that stat
- titzer 6y agoWell judging from your comment it's going to be hard to get your default attitude to change on this. What would change your mind? A popular mechanics article? https://www.popularmechanics.com/science/environment/a24749526/turbines-apex-predator-study/ https://www.popularmechanics.com/science/environment/a247495... Turbines are bad for birds. Period.
- bawolff 6y agoSo, paint is cheap. Its not like we're talking a multimillion dollar mitigation. Lets paint some turbines and see what happens.
- agumonkey 6y agoThat would be smart of spacex to allocate some profits to do these projects. win-win business orientation
- moralestapia 6y agoSure, but don't forget SpaceX is a for-profit organization.
- buzzerbetrayed 6y agoWhich is exactly why they’ve been so successful. Capitalism proves effective yet again.
- martin8412 6y agoMany people? You mean people in rural US/Canada and Australia. The rest of the world already has been options in most places.
- newman8r 6y ago> They also kill many birds, but this is nothing compared to the amount of birds that cats kill. FWIW, turbines may be worse than cats in terms of harming large birds of prey. You won't see neighborhood cats killing eagles. I'd still agree that it's probably a reasonable tradeoff though, and that it could be further reduced with better engineering.
- rb666 6y agoWind turbines do not kill many birds, that is a myth pushed by climate hoaxers. They have their drawbacks, but that aint one of 'em.
- minitoar 6y agoWhere are you getting this information from?
- minitoar 6y agoThis was a serious question. There doesn’t seem to be a straightforward answer.
- mlyle 6y agohttps://wildlife.onlinelibrary.wiley.com/doi/abs/10.2193/2007-032 https://wildlife.onlinelibrary.wiley.com/doi/abs/10.2193/200...
- adamjb 6y ago>The Altamont Pass Wind Resource Area (APWRA) began operations during the 1980s and by 1998 included about 5,400 wind turbines of various models, each rated to generate between 40 kW and 400 kW of electric power, or 580 MW total >Using mortality estimates adjusted for searcher detection and scavenger removal rates, we estimated the annual wind turbine–caused bird fatalities to number [...] 2,710 (80% CI =-6,100 to 11,520) birds. That's 1/2 a bird per turbine per year. Or one bird per 110 nameplate KW per year. That means that they're a bit safer than the average building, assuming that the number of buildings in the US doesn't exceed the number of people by a large amount. >We estimate that between 365 and 988 million birds (median = 599 million) are killed annually by building collisions in the U.S., with roughly 56% of mortality at low-rises, 44% at residences, and <1% at high-rises. https://academic.oup.com/condor/article/116/1/8/5153098 https://academic.oup.com/condor/article/116/1/8/5153098
- jojobas 6y ago
- serf 6y ago>Most things in life are like this. Wind turbines are a great way to supply green energy, but building them takes a lot of energy. Reminder : we only have one sky. Things offer both positives and negatives, but a) generally those things are decided by local powers and authorities that can be influenced by local populations -- not corporations from specific countries that may or may not be far away and without local permission (those decisions that are made by foreign corporations that modify local attributes is generally frowned upon -- very few like the oil rigs scattered around the ocean, they tolerate them due to the profits associated) b) very few of these decisions create global impacts, the ones that do (say, environmental issues) have many confounding factors and influence groups working with them, representing many different people and locales. In just so happens that in the case of 'the sky' we're all 'locals' -- but very few people, with respect to 'the world', had a say in the matter.
- ixfo 6y agoThis is an excellent summary of a lot of the kickback and risk for Elon. I think if Elon had gone to, say, the UN and tried to start a discussion about this stuff more generally to establish some ground rules for SpaceX and others, it would have been much better received. It would've given a forum to those affected - communities around the world and astronomers and other satellite operators - where none exists. Some discussions around things like target albedos, orbital parameters, and constellation sizes could've been had before a single bird went up. This would've also made life easier for other operators now working out how to dodge the Starlink constellation on the regular. But Elon is not that sort of person, which is the great tragedy in all this. Maybe you have to be a screw-the-rest, I'm-going-to-do-it kind of person to succeed as he has (or just inherit a huge pile of cash, or maybe both). But it strikes me that as a strategy he's opted to go it alone until regulators start to step in, which is unlikely in this industry for a while given the global nature. I think it will take something akin to the blocking of satellite uplinks (that brought the UN into international satellite operations somewhat, and effectively designated such jamming as an offensive act of war) to actually bring regulatory scrutiny to bear. The loss of ground-based astronomy isn't a big enough issue - yet - to justify the engagement. But if these constellations get bigger and bigger and the impact gets larger and larger, then that impact will add up. All we've had so far is the "early warnings" from those paying attention to the early deployments. I think Starlink and its competitors are a very important short-term part of the global internet access discussion, but it's not a long-term fix; constant satellite launches, maintenance, and deorbiting will not be viable cost-wise over the 20-40 years most fibre installations expect to be around for at a minimum. Fibre will eventually reach everywhere - wireline operators across the globe are seeing Starlink as a short-term thing which may paradoxically make it much harder to justify rolling out a proper fix to the hardest to reach, and which may cause governments to deploy subsidy to offset the risk. In the USA it's a bit mad and distorted because of the insane market that regulators have allowed, but in the EU/UK and most of Asia, govts are making sure full fibre gets to everyone (slowly, in many cases, but it is speeding up rapidly these days). Just like nuclear, this is a perfectly good stop-gap. But the right answer is renewables - everyone knows it - it's just a matter of timing.
- gens 6y agoLike all machines, they will fail. Picking up trash in space is harder then fixing what we did to the environment, even if it impacts us less. Laying down optics is a much better solution to this selfish problem.