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In the spirit of bringing life into the thread, I thought I’d share something a little different.
https://archive.ph/96KCm
A summary won’t do it justice, and I encourage anyone interested to read the linked article; it’s not long. In short, though, researchers checked out approximately 5 million stars (in our galaxy—close enough to look well at and potentially one day visit) for anomalous ratios of infrared heat to light. The idea here is that if a star is giving off a lot of light that is being captured, it will heat whatever is doing the capturing up significantly. This is suggested to be possibly due to either unusual debris fields around these stars, which would be unexpected due to their age (most planetary collisions happening early on in a solar system’s lifetime, and these stars being older)… Or due to large amounts of sun-orbiting satellites soaking up solar power, a Dyson swarm. Our exoplanet imaging is still very much in its infancy, and we have already discovered planets that seem to bear biosignatures. The latter explanation is plausible, at least.
This is pretty far from standard culture-war fare, but I suspect that there are enough rationalists and futurists here to find it interesting. There are also a few potential links:
This implies that there is either a way through the theorized AI apocalypse, or perhaps that silicon-based life continues growing after taking over from carbon-based life (the “biological boot loader” thesis). While I’m rather attached to my carbon-based existence, it’s at least heartening that in this scenario something is still happening after AI takes over; the spark of life hasn’t left the universe. Unless all that power is going to making paperclips, I suppose.
Does it make sense to enforce population control on a cosmic scale, discouraging humans from expanding to other stars to avoid conflict? Could the “dark forest” hypothesis make sense, where offense is favored over defense and civilizations hide as much as possible?
Mods, I apologize in advance if this is insufficiently culture-war adjacent to deserve posting here. I didn’t think it worthy of its own thread, and feel like it’s perhaps healthy for the Motte to have some fresh topics as well. I’m a devoted lurker and thought I should do my part.
Edit- My list got butchered. Trying to fix it, but it seems the method I chose of writing multiple paragraphs after a question is disfavored.
Until I put my fingers in the nail marks, and put my hand in its side, I will never believe.
My understanding is that propellantless drives ("swimming in space") are permitted by the current Laws Of Physics. This approach is very different from the one taken by the propellantless propulsion efforts, though.
Don't most of these still require exotic matter? Trading breaking conservation of momentum for negative mass never really sounded to me like a gain in credibility.
Not "swimming in space" – that just requires changing your shape.
There are "warp drives" that use exotic matter for superluminal travel, but there is also at least one proposal that uses no exotic matter, albeit only for slower-than-light travel.
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