Wtf... There's no narrative or throughline, it's just like... if you distilled "unsettling" and put it on paper.
Well, successful art I guess, it made me feel things...
Water from non-Earth sources might contain dissolved minerals at poisonous levels for agriculture, much less human consumption.
Oh yeah, it's practically guaranteed to contain nasty stuff! We're gonna drink it anyway though.
Most of that water on earth that we'd consider "not useful" would fall into the "100% useful" category if found in space. As long as the contaminants have a different boiling temperature from water, you can always boil the water into steam in order to separate it. Or you could also use electrolysis to separate out the hydrogen and oxygen and then recombine then in clean tanks.
These are expensive methods of purification, energy intensive, but solar panels really well with no atmosphere and 24/7 sun exposure, so this is all feasible.
Well, we have multiple launch vehicles, we have multiple crew capsules, multiple cargo vehicles, and just about all of them are cheaper than our previous options. The crew capsules we're using now are all several orders of magnitude safer than the space shuttle (even the Starliner in it's current state is an order of magnitude safer than the shuttle). And now we have options that don't require us to negotiate with Russia to use them.
Or maybe the advantage is not having to counter any sail movement with gyroscopes... which cost energy too.
I think you nailed it right there.
And they're doing a real bang up job of it... Dropping tanks of Nitrogen Tetroxide and hydrazine to explode near towns. Really killing it.
And you should know, China is not doing it themselves, there are about a dozen launch companies and aerospace manufacturers making rockets in China.
The Long March 2C that carelessly drops its booster all over the place (a poorly designed rocket) is government made, but they aren't all that way.
Private companies have always been a big part of space flight, except it used to be only large defense contractors (Aka, Boeing, Raytheon, lockheed, etc). Honestly the situation is better now than it has ever been. But we'll never get all private companies out of space flight, NASA can't do it all themselves.
You would think that, but that's probably not the case. This is what they train for, this is what they want to do. As a rule, astronauts don't tend to get bored of space, that's why they're astronauts.
Maybe we should just make those AI tools public and free and leave it at that. If you monsters want kiddie porn, have this AI generated stuff. It's sort of like having needle exchanges or safe using centers for addicts. It doesn't solve the problem, but it makes it safer for everyone.
Why isn't it targeted at the entire fanbase?
Is that a serious question? Because the answer is obvious...
Ok, let me start out by saying I have an 8 year old, and he fucking loves Minecraft. And hey, I played the game a bunch back when it was in beta and I was like 25. But I did not love the game the way that he loves the game... He's obsessive about Minecraft, some days it's all he talks about. How many adults do you know like that?
And here's the real question, when's the last time you bought Minecraft merch for yourself? Because my kid has a Minecraft lunchbox, a Minecraft hoody, a Minecraft Lego set, some Minecraft figurines, and of course the Minecraft sheets and PJs.
Faintly glowing?
Pass....
Well that's a really interesting application though... 9 times less thrust may not actually be a very big deal. A solar sail probe would likely be a lot lighter than a fueled equivalent, so that means you have the payload mass to send more probes on the same launch. And asteroids don't have meaningful amounts of gravity, so you can take as long as you want to get from one to another (you don't need much thrust to overcome their gravity well). So yeah, I think more than likely you could make up for a lack of speed with sheer quantity.
That's such a badass design, I love it.
A variable thrust and thrust vectoring propulsion system with no moving parts. I doubt that's ever been done before...
Yeah, we may well end up seeing a lot more use of solar light pressure to orient spacecraft over the coming years, especially deep space probes and higher orbit satellites. Telecom satellites need a lot of power for their transmitters, so they generally have quite large solar arrays, I wouldn't be surprised to see some of those using this method for station keeping. (Though these days they're already using very efficient ion thrusters for station keeping, so they may not really need to use this method)
But while solar sail propulsion takes a lot of very specific design requirements, using solar pressure just for maintaining orientation doesn't actually require any fancy hardware (if you already have solar panels), it's all an entirely software solution. Which means it's always a viable backup plan when hardware failures occur.
Well... I'm afraid I'm not sure if they'll be effective for the ISS. The ISS sits in low orbit (a relatively high part of Leo, but none the less), so it hits some extremely thin atmosphere, which has a noticeable drag over time. For that reason the ISS has to boost its orbit a little every few months. My fear is that a solar sail large enough to have an effect on the ISS is probably large enough to add a whole lot of atmospheric drag, even from just the trace particles it encounters.
Maybe someone can answer me this: I've always wondered if a solar sail can only generate momentum away from the sun or if it can be angled to create momentum in other direction.
Yeah, 100%. You can totally steer and control your orientation with a solar sail. This is one of the rare actually intuitive things when it comes to spaceflight. (with physics in space It seems like nothing actually works the way you'd expect it to, but this basically does)
We actually have some experience controlling orientation with "solar sails" too. I remember one example of a spacecraft which long after finishing its official mission was left to tumble out of control. Years later, some engineers were able to regain control, use the last of its propellant to counter its tumble and then keep it oriented correctly using only its solar panels as sails, light pressure was carefully controlled to keep the spacecraft oriented.
I believe this is one of those things that benefits from scale. Theoretically, the larger you make the sail, the better the thrust to mass ratio you can achieve (even before calculating a better payload mass to sail mass ratio). With improved materials, we can make stronger and lighter sails and support structures, and this will in turn result in higher velocities by the time the vehicle has left the effective range of the sun. I think speeds truly approaching c are unlikely, but they can still achieve "really freaking fast".
But then new advanced materials could also change that, we're developing metamaterials with some fascinating properties, carbon nanotubes are just the tip of the iceberg. Who's to say that we couldn't some day achieve those speeds.
Doesn't "solar wind" refer to the physical particles emitted from the sun? Like hydrogen, helium, etc ejected from the sun's outer layers?
My understanding is that the solar sail is propelled mostly by the photons themselves, not the atomic particles that may also be reaching it.
Of course this probably doesn't change your argument at all, since the intensity of light drops off precipitously as you fly further and further from the sun.
Ok, a side note on etiquette here.
When I saw this reply it had a point score of 0, which means somebody downvoted the post.
When a user is freely admitting a lack of expertise, and defers to another user who seems to know better, I would say it's extremely rude to downvote that reply.
This is an example of a user going out of their way to humbly rescind their previous statements when it appears they were mistaken (this is admirable and not a thing that usually happens on the Internet). They didn't do it for their own benefit, but for the benefit of the community, to not leave misleading or incorrect information in the comments.
So to sum up, downvoting a selfless act is pretty shitty and not good for the community.
A pizza flavored Hot Pocket is just a calzone...