Self-replicating probes are humanity's best bet for space exploration and they're becoming a reality. Did ETIs develop them?
” In it, he talks about advances in 3D printing, self-replication, and robotics and says that we’re already building self-replicating machines, though they have their limitations. He also says that if we’re developing them, then ETIs—if any exist—should’ve developed them, too. He argues that SETI might be better focused on finding evidence of probes rather than scanning the sky for radio signals.
based on the wasp’s drill and ovipositor, so the ovipositor could inspire a similar solution in asteroid mining.Most of us don’t pay much attention to advanced 3D printing. But researchers are constantly pushing the envelope of 3D printing and additive manufacturing , and Ellery has a robust opinion of 3DP and AM when it comes to self-replicating probes. The technology is constantly progressing, and Ellery talks about some of the advances.
There’s still a long way to go to get from an electric motor to a self-replicating probe, but this is definitely progress. “We have 3D-printed electric motors which can be potentially leveraged from extraterrestrial material that should be available in every star system,” Ellery writes. The image on the left shows aluminum being melted with a fresnel lens. The image on the right shows molten aluminum directly on silicone plastic. Image Credit: Alex Ellery.
Ellery makes a strong case that we are approaching the age of self-replicating machines, though there’s still lots of work to do. “We are currently developing self-replicating machines – although there remain challenges associated with the large scale associated with interstellar travel, our current self-replication scheme ensures that the fundamental technologies can be developed in short order,” he writes.
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