We’re on path to The Expanse timeline:
https://www.youtube.com/watch?v=6722NAzNXck (spoiler, obviously)
spoiler
Basically a station was striking and demanding better worker rights, the UN Earth Government sent a spaceship, tried to jam their surrender call, then blew up the entire station for “being hostile and refusing to surrender”. They had children on the station.
Never trust the endeavors of the bourgeoisie.
Seems they’re wanting to put the means of production somewhere where regulations and oversight are simply too impractical to do.
We can finally make endo steel chasis!
“The work that we’re doing now is allowing us to create semiconductors up to 4,000 times purer in space than we can currently make here today,” says Josh Western, CEO of Space Forge.
Interesting. Having something that can only be manufactured in space would be a real motivation to getting off our asses and back up there.
Why? Why do we need to pollute the earth even more so that the capitalists can gain more capital outside of it?
We have crises here that are only exacerbated by this dumb need to send people to space.
Space used to be inspiring when it was the playground of scientists and engineers. What made it all vomit was the privatization of astronautics (and the associated place in our imaginations) to the worst possible assholes and their cult of personality.
Bingo.
I’m fine with national space programs and whatnot.
I’m not fine with private sector in space.
We have crises here that are only exacerbated by this dumb need to send people to space.
The human race is capable of doing more than one thing at a time. That we aren’t working on solving our many crises has nothing to do with whether or not we’re in space. You’re tying together two issues that have absolutely nothing to do with each other.
That we aren’t working on solving our many crises has nothing to do with whether or not we’re in space. You’re tying together two issues that have absolutely nothing to do with each other.
Climate change and space travel are literally opposing goals. If we send people to space, we add more greenhouse gasses to the atmosphere. If we stop polluting the atmosphere with dead dino farts we cant get people into space.
“Absolutely nothing to do with each other”
Do you think rockets burn unicorn farts and exhaust pixie dust?
We have enough morons sending their penis extensions to space for shits and giggles, we do not want to “start manufacturing in space” so capitalists can fuck the climate up even more for the rest of us.
Do you think rockets burn unicorn farts and exhaust pixie dust?
By that logic, pretty much any activity we do exacerbates the crisis. The climate is not being fucked because we’re launching rockets, save your passion for those issues where it actually matters.
we do not want to “start manufacturing in space”
Speak for yourself.
By that logic, pretty much any activity we do exacerbates the crisis
Almost the right conclusion. Some activity exacerbates more than other. Sending rockets to space is the “more” one.
The climate is not being fucked because we’re launching rockets
Exactly! Not yet. Let’s keep it that way.
I understand we’re all fans of science-fiction here, and especially gullible when billionaires promise us “colonies in Mars next year”, but try to keep it grounded since manufacturing isn’t even sustainable yet here on earth.
Hell yeah! Actual useful industrial endeavors are the way we finally get humans off the planet, this is the way to the future. Once there’s a reason for industry in space, there’s a reason for support industries, construction, material supply, fuel supply, maintenance, etc. With those support services comes reasons for people to start to actually live in space, where they work. And from there, we can start to spread our legs and really “move in” to solar system, and the story of the human race truly begins.
Can’t wait for variable mortgage rates, but on mars.
I’m mostly joking, I think it’s great if we can become space farers, just can’t help but think about what we did the last time we were out colonizing…
And how much space junk will end up there? Cleaning up afterwards costs more money and long term thinking isn’t something shareholders care about over more profit today.
The tech is interesting, hopefully governments across the entire planet regulate it well enough. Although at the same time, its not like we really need to care either. In our lifetime its not like any of us are likely to be able to afford to go to space anyway, but it would probably be a good idea not to ruin it if we have a choice.
It shouldn’t be too hard to engineer orbit decay as a feature to avoid space junk.
Consider that space junk is so sparce it’s not really much if a consideration for launches. It’s like the rings of Saturn: the likelihood of a collision is so remote that they didn’t even consider it when we had a satellite move through it.
Pretty sure its the asteroid belt, not planetary rings, that you don’t really need to think about when passing through.
And yeah, it shouldn’t be too hard and yet look at all the junk already up there. Hopefully they can just be required to keep to very low orbits that decay rapidly.
It’s like the rings of Saturn: the likelihood of a collision is so remote that they didn’t even consider it when we had a satellite move through it.
I didn’t realize that, what mission is this your talking about? Cassini?
i guess its time to start a space labor union
Call it Beltalowda
Pretty interesting. How come they can get 1000c in space but not on earth? Doesnt the vacuum of space make it hard to retain heat?
The article doesn’t state they can’t reach that temperature down on earth, and many processes do. It’s really not the jist of the article. Space manufacturing is interesting for the micro-gravity and better vacuum/less contamination. .
Heat is so easily retained in space that when the Shuttle launched they only had 4 hours to open the cargo doors to expose the radiators or the cabin and electronics would overheat and they would have to scrub the mission. They never had to scrub for that reason though.
Vacuum is a perfect thermal insulator. The only real losses are radiative.
Edit: From Stefan-Boltzmann: up to (not sure about emissivities, but could be down to 10% of this) 100kW for a black body of 1m diameter at 1000C.
I’m completely unaware of the science around it all but none the less its exciting stuff, i hope to read more about it as things progress.
There are three modes of heat transfer; conduction, convection, and radiation.
Conduction happens when two bodies at different temperatures come into contact with each other. The total heat transfer depends primarily on the difference in temperature, contact surface area and time spent in contact.
Convection takes place when a fluid (I.e. a gas such as air or a liquid such as water) comes into contact with another body. Here, again, heat transfer depends on difference in temperature, contact (“wetted”) surface area and time in contact which is primarily dictated by how fast the fluid is moving over the body.
On Earth we generally leverage these two modes. An example of mixing the two modes is a CPU heatsink and fan setup. The heatsink conducts heat away from the CPU and is (usually) distributed throughout several extended surfaces I.e. fins. The fins increase the surface area in contact with air, enhancing the rate of heat transfer.
Now, we can’t really take advantage of those in space. The lack of an independent physical medium means the heat ultimately has no where to go; this is known as a “closed system”. So if we generate or store enough heat in a body subject to the void of space without promoting radiative heat transfer, that heat will more or less stay put.
Radiative heat transfer is fucked up. Everything above absolute zero radiates heat. You mostly can’t see this except for one glaringly obvious example; the Sun. Sol is so fucking hot that it heats the Earth through the vacuum of space purely via anger aka photons. And thanks to the miracle of science, you radiate anger right back at it.
Explaining radiative heat transfer further is outside the scope of this reply and will be left as an exercise to the reader.
I hope I explained this well enough for you or other readers to impart a ‘basic’ idea of a complex engineering discipline that I adore. I’m absolutely willing to answer any questions.
Are you sure it’s engineering you adore. Left as an exercise for the reader? That’s physicist speak.
Hah! My adoration of partial differential equations is far purer than even physicists could hope to achieve.
Finally, like SciFi series ‘Star Trek’ & Etc.
Only problem is all the garbage already in space, damage! I assume better for the environment, even with environmental cost putting all that into space. Robots not our species working there.
Ew… Aliens don’t need more human garbage. Have you seen how much space junk we have?.. We already look like the universe’s junk yard.
The only ones that junk is a danger to is ourselves. Kessler syndrome is no joke.
Kessler syndrome is no joke.
Except it kind of is.
It can’t really happen at very low earth orbit, where the majority of satellites are, as any unpowered space junk would deorbit relatively quickly. And it can’t really happen at geostationary orbit, where most of the rest of them are, because when you go out that far there’s just so much space between every single object… The only way you run into something out there is on purpose and after a lot of calculations.
So there’s medium orbits and higher LEO those are the only areas we need to be really careful with.
