> salting a star with an impossible chemical composition might also be a way for a technological species to create a monument, correct?
It's an impossible composition from a nuclear physics point of view, since the star shouldn't be producing these atoms, and they can't be part of the initial makeup of the star since they're unstable elements and would long be gone by now. The most likely explanation is still that something randomly collided with the star.
If it's a monument, then it certainly is the right one to send a (very vague) message far into the future, "we were here".
> This seems like it would involve moving less mass around than a Dyson Sphere/Swarm
It's a bit weird to compare two endeavors we haven't even tried yet, but making a Dyson swarm seems vastly easier than this. To pull off the salting of a star, you'd need to constantly manufacture vast amounts of exotic radioactive materials. A Dyson swarm may be massive (although there would be very light-weight ones you could build if the only function was to be a monument), but it's "just" a lot of solid bodies orbiting a star. A star salter, on the other hand, would require way more complex engineering.
It's an impossible composition from a nuclear physics point of view, since the star shouldn't be producing these atoms, and they can't be part of the initial makeup of the star since they're unstable elements and would long be gone by now. The most likely explanation is still that something randomly collided with the star.
If it's a monument, then it certainly is the right one to send a (very vague) message far into the future, "we were here".
> This seems like it would involve moving less mass around than a Dyson Sphere/Swarm
It's a bit weird to compare two endeavors we haven't even tried yet, but making a Dyson swarm seems vastly easier than this. To pull off the salting of a star, you'd need to constantly manufacture vast amounts of exotic radioactive materials. A Dyson swarm may be massive (although there would be very light-weight ones you could build if the only function was to be a monument), but it's "just" a lot of solid bodies orbiting a star. A star salter, on the other hand, would require way more complex engineering.