So you heat habitats, which radiate heat. And run computers, which radiate heat. And move objects around, which radiates heat (among other things). And if you merely absorb energy from your star...it radiates as heat. This is the whole idea of entropy. Unless your lasers are particularly efficient and you use them to beam the energy elsewhere, your Dyson swarm is going to radiate heat equivalent to the energy your star puts out.
GreyEyedGhost
joined 2 years ago
And male dogs are sexually attracted to human legs.
Male mammals, at least, seem to have a universal desire to get off. I wouldn't be surprised to see this extend to other classes, but I haven't had a particular urge to investigate.
Limestone is also a suitable building material.
Trees are sadly inefficient for the scales we need. I'm not saying we should cut down more trees or stop planting them, but it will take much more than that to get us out of the hole we've dug ourselves into.
Thermodynamics says that energy can't be destroyed (mass-energy, but generally that won't matter). So after the work of running your stellar civilization is done, you will radiate out waste heat. There is no real way around this without breaking thermodynamics or having a handy black hole to dump all your waste heat into. Therefore, the energy of the star will still be released, but it will be released as infrared.
Even a Dyson sphere, which is technically unlikely anyway, would be possible to spot. You would look for something very bright in the infrared spectrum with almost no light in the visible spectrum. It would also be larger than a normal star of the same energy, but that would be hard to tell given all the other issues.
A partial swarm is easier because it will have variability towards more infrared and then back to a more normal spectrum.
And, of course, all this is speculation until we find a candidate and determine it doesn't have a natural source for that behavior.
Where I live, the base model of the Chevy Bolt is $41k, and doesn't have heat pump climate control (or isn't talking about it). It also doesn't look like it would seat 5 comfortably. Now, even without the spectre of financially supporting Elon's antics, I don't see a lot of reason to pay another $10k for a reasonably similar car. People are weird. 🤷♂️
Saw the meme three times before I got it...
I read another stupid and dangerous take, look at the username, and of course.
I read some of these, more to get insight into how other people think, but often I come to the conclusion that there is very little I can do to help and that people who behave that way aren't people I want to help. My ego is just fine, thanks, but blind hostility isn't something I welcome into my life.
Their average height is much lower than people from South Korea. The most likely cause is malnutrition. When malnutrition affects even the military, your civilians aren't doing well.
If you're looking for sources, there are plenty of links should you search for "north korean vs south korean height". The difference is pretty dramatic for 75 years of isolation.