r/Midjourney

Is that when you logged onto Midjourney and described it?

Consider yourself corrected, you are wrong. Their legs aren't biomechanically capable of it at any age.

In a near vacuum water is going to sublimate off of whatever you store in that environment. Some organisms like tardigrades are able to survive exposure to vacuum, but they don't "live" in it and they definitely don't reproduce.

It is already a part of the calculation. Different types of stars have different goldilocks zones so if a star transitions between types the zone placement will be different afterwards.

If you're asking would life on a specific planet survive the transition, the answer is no, almost certainly not. Take our star and Earth as an example. It's the only one we have. In 5 billion years when our sun transitions to a red giant its diameter will massively increase but its mass will remain the same. So the planetary orbits relative to the center of the sun will remain the same. There's a good chance that the Earth will be consumed entirely. Wherever the new goldilocks zone is, you can be pretty certain that it's not inside the star.

This type of problem will be similar with most of these transitions. If the stars diameter and energy output change but the orbits of the planets surrounding it do not, it's highly unlikely that a planet would be inside it both before and after the transition. Probably impossible but I don't have the time or data to prove that.

That's so far beyond the capability of our species that it's not even worth discussion. It's like saying that if we built a big enough skyscraper we'd have to worry about it knocking down satellites.

You're missing the point.

The RFP was for 3D printing ground based habitats. Nothing that NASA or the ESA has actually pushed forward in terms of habitats involved 3D printing in low g. The competitions that they actually spent money on were for surface structures.

We're not talking about an actual CNC. The "wasted material" you're talking about is vaporized lunar rock. There's plenty to go around and you get a couple orders of magnitude more volume for your energy input by cutting down into it rather than building up with it. And that's before you even run the math on radiation shielding. Nobody is living off Earth without several meters of mass between them and the outside for any length of time any time soon

I like 3D printing, I've spent half a million on it over the last 10 years or so, but it's overhyped and it gets dropped in as a magic solution for every problem these days.

I completely agree. I thought about it for the first time 5 or 6 years ago when they were talking about 3D printing habs. I had a giant 3D printer (100x100x150cm) that I would run nylon through and it used more power than the rest of the building it was in. I couldn't see the practicality of 3D printing with local materials in an environment where energy efficiency was key. It didn't make sense. But if the energy was essentially free, instead of 3D printing they could essentially build a solar powered CNC machine.

Living underground makes more sense anyway. They need all the radiation shielding that they can get. Put the water supply on the roof above the living spaces and they'd be even safer.

There's a reason Musk started his boring company.

I actually have no idea. I have some experience with allotropes of carbon at high temperature but that was also at high pressure in a fluid environment. I have no idea what would happen in a vacuum but that wasn't really the point I was making.

Not a lot can stand up to unfiltered solar power when it's concentrated 1000 to 1. The energy is free, they'd only need propellant to set and maintain the orientation of the mirrors. With enough of them they could probably cut a tunnel straight down.

Lasers and microwaves are both pretty inefficent for this. A few dozen heliostats could easily melt regolith from lunar orbit. Focusing a hundred square meters of reflected sunlight on a single square meter will melt a diamond when there's no atmosphere to attenuate the energy.

That mass of cells between your ears is technically a brain. It's cream cheese and nobody grills it.

Lots of different catalysts have triggered mass extinctions but the event they often trigger is a change to the ocean's microbiome. Giant influxes in fertilizer, methanation, changes to acidity, salinity, temperature, etc. Lots of things have triggered them but the end result is a change to atmospheric composition. It's why there used to be giant bugs and why they're not here anymore.

My point being, whatever comes next will probably be so different than us that it thrives in a very different atmosphere.

I understand what you're saying but I was talking about something close to or better than human vision. I'd argue that bionic eyes are further along because they're sending a simplified signal. As they ramp up they're going to run into the mapping issues. There's a ton of different procedures and repairs to incentivize improvements in neuron grafting, organ rejection and neurogenesis where the bionic eye challenges seems like it will pull in less R&D money. I might be wrong though, brain implants are getting popular in the startup funding cycle so that might drive crossover breakthroughs.

I'm personally rooting for bionic eyes. I'd like to be able to see like a mantis shrimp in my 70s.

We would need the ability to graft and/or regrow nerve tissue. Something has to carry the visual signals generated by the eye to the brain or its just a useless eye sitting in your head.

For an artificial eye (basically just a camera) we would need the ability to connect and interface electronic components with nerve tissue and the receiver would need to be able to produce a signal that the brain can understand.

We will probably have eye transplants well before bionic eyes. When we do, what you're describing is basically something like a Bluetooth receiver connected directly to the optic nerve where the "eye" is a standalone, battery powered camera that just happens to sit in the eye socket most of the time. Useful, but it would probably be really disorienting when you take it out. I imagine most people would get motion sickness.