How about we wait until the science is actually in before kneejerking around? We have had the science equivalent of a shower thought, actual work and analysis needs to be done before jumping to conclusions.
How about we wait until the science is actually in before sending hundreds and thousands of satellites into LEO?
That's an interesting idea to consider (if I understand you correctly in that you are stating that there should be a central research authority that regulates what companies are allowed to do). Though, I wonder if it's still better to sue for damages after the fact and create regulations to cover the oversight. There's also the issue of data — you can't exactly study an issue before it exists. If you are instead inferring that a company should conduct this sort of safety research themselves, it creates a sort of prisoner's dilemma: companies wouldn't be to keen on sharing their research with others, and if they are forced to, a company wouldn't want to be the one to waste the money on it for others to profit off of.
I'd also like to note that this sort of regulation has no business being the decision of a single country, but, instead, it should be the decision of a global government, as it is an issue that affects the whole planet. How such a global government should be structured, though, I am not yet certain. The UN doesn't exactly cut it.
Let's fire some shit in the atmosphere first and then let scientists figure it out when it's too late anyway. Absolute boomer shit
Urm i think the rocket needs to wait instead of us
But it's going to make him slightly richer! How could you be so selfish?
Omg imagine elon having 100billion dollars, that would be so lit fam
SpaceX has been receptive to design changes to starlink in the past to minimize impact, like decreasing reflectivity and reflection angles for astronomers. They might be receptive to moving to different alloy for the body construction.
Magnesium comes to mind that would be light but expensive. Steel alloys might be cheap and heavy options for later when starship is operational. Would those have similar effects on ozone, or is it only the aluminum oxides? Carbon fiber also looks promising. It could be pretty cheap and light if you can keep it planar rather than custom formed. Someone had mentioned wood in a different thread, but I'm uncertain if that'd work because of off gassing.
Japan I think launched a wooden one, will see what they find out
Best be hoping Tesla collapses and Elon gets his with the SEC. When TSLA falls, he will lose his connections and no one will be willing to protect him, just another loser millionaire white guy and sometimes the government does go after them.
Elon will likely be fried at that point because he will have committed the worst crime in America: messing with rich people’s money.
Best be hoping Tesla collapses
Why?
or bezos, or anyone else.
I find it funny that even the problems he "invents" are not new.
Have yet to see any of these 'studies' take into account and compare with natural meteorite effects, which are orders of magnitude larger than the satellites.
Are you just doing the thing where you cast doubt on journal articles because they feel wrong? You don't think humans can affect the natural environment in such a way? This sounds oddly familiar and a bit ironic for this community....
Meteors aren't made out of aluminum like satellites are btw. There will be more reasearch done and we will learn more. But for now, there's a potential issue.
https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.amp
Meteors aren't made out of aluminum
Aluminium is an element, it's going to be present in meteors to the same extent it is on earth
Is that a thing? Meteors content matching Earths?
Meteors are leftovers of the same primordial stuff that made up earth, so a cross sample of them would largely share the same ratios as earth, minus the volatiles.
Though it looks like the community hive mind has made up its mind on this one
Meteors are leftovers of the same primordial stuff that made up earth, so a cross sample of them would largely share the same ratios as earth, minus the volatiles.
Logic would dictate that that is likely, though that statement itself isn't scientific. Do you have any sources to back that up? I could see a possibility where, perhaps, certain elements are more likely to coalesce into planetary bodies, and others into meteoroids. It could also depend on the location in the solar system where the formation occurred — the primordial dust cloud that made up the infant solar system, I would wager, would be far from uniform.
I did some very rough estimates and found that the amount of aluminum entering the Earth's atmosphere each year is probably between 100 and 500 tons, which would be roughly comparable to the amount coming from these LEO comm sats like Starlink.
These are just super ballpark figures, but it's in the same order of magnitude. More research is definitely necessary.
That's not the comparison at all, the comparison is what the sattelites are made of (mostly aluminum) and what the meteors are made of (mostly other stuff, like earth).
They won't, it's just musk hate. I can't stand the idiot either, but starlink has done more for rural and underserved homes than all the telcoms have in the last 30 years.
It may be true that Starlink is a great service, but that's entirely irrelevant to the point of the article and any ozone destruction that the satellites cause.
Way more tons of meteorites burn up entering the atmosphere than the amount of shit starlink will even remotely produce.
https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.amp
The issue is that meteorites don't have hardly any aluminum, which is the metal of concern here. We're already seeing significant increases in the upper atmospheric concentration, and it's projected to get a lot worse.
Meteorites do contain aluminum. The issue is with the concentration of aluminum in the atmosphere, as well as its rate of increase. If there's an increase in the atmospheric burn up of artificial satellites accompanied by an increase in the problematic particulate in the atmosphere, then it's certainly fair to consider that the two are correlated. This is especially so if there is no increase in the burn up of objects from any natural source — eg meteors.
Hm, while the presence of the elements in question in the atmosphere could be naturally occurring, what's important to consider for this discussion is the rate of their increase. If there's an increase in the problematic particulate in the atmosphere that correlates with an increase in the atmospheric burn up of artificial satellites with no related increase in the rate of meteors, then its likely that the artificial satellites were indeed the culprit.
Wow. I read that as ozone laser and was super confused.
Of all the valid reasons to hate elon for, this is not one of them. The emissions from the entire world's satellite re-entries are basically nothing on an atmospheric scale.
The article cite a peer-reviewed scientific paper paper which indicate satellites reentry has a significant effect.
Have you published (or know of) a better research paper that show this is incorrect?
the population of reentering satellites in 2022 caused a 29.5% increase of aluminum in the atmosphere above the natural level.
[..]
As aluminum oxide nanoparticles may remain in the atmosphere for decades, they can cause significant ozone depletion.
There article is about a paper showing that there's a significant increase in aluminum oxide in the atmosphere. The particulates from that are part of how the small amounts of chlorine in the atmosphere are able to destroy ozone.
I'll write Elong to stop on Twatter.
I question the potentially sensationalist title. Why specifically target "Elon Musk"? Would it not be more accurate to pin the responsibility on the entirety of SpaceX? I could certainly be mistaken, but I feel that the decisions made at SpaceX are not only Elon's.
And how do you know it's magnitudes higher if you haven't seen any studies taking it into consideration?
How much do you think (micro)metoerites bring in daily?
https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.html
When old satellites fall into Earth's atmosphere and burn up, they leave behind tiny particles of aluminum oxide, which eat away at Earth's protective ozone layer. A new study finds that these oxides have increased 8-fold between 2016 and 2022 and will continue to accumulate as the number of low-Earth-orbit satellites skyrockets.
Those micrometeors aren't mostly aluminium.
Those micrometeors aren’t mostly aluminium.
Do you have a source for that? Perhaps I'm misunderstanding you, but I've found a number of sources that show that meteorites contain aluminum:
To be fair, I don't think any of those claim that any meteorites are "mostly" aluminum. But is that a true requirement?
I did write "mostly" for a reason. Aluminium is used a lot in aerospace due to its low mass. There is a lot of matter falling from space naturally, but the composition is key to the effects that will have on the atmosphere. Satellites, spent stages etc. have different compositions to meteors.
Over 20 elements from reentry were detected and were present in ratios consistent with alloys used in spacecraft. The mass of lithium, aluminum, copper, and lead from the reentry of spacecraft was found to exceed the cosmic dust influx of those metals. About 10% of stratospheric sulfuric acid particles larger than 120 nm in diameter contain aluminum and other elements from spacecraft reentry. Planned increases in the number of low earth orbit satellites within the next few decades could cause up to half of stratospheric sulfuric acid particles to contain metals from reentry.
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
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