/sci/ - Science & Math

>>2720079
They way we defend ourselves from these sort of attacks would also be our long term survival strategy. Completely disassemble the all the rocky planets of every stellar system we can get access to and use that mass to build Dyson Swarms of space habitats around the local stars. That way we can continue to survive around those stars until they burn out, which in the case of the lowest mass red dwarfs would be about 120 trillion years. The largest lofstrom loops possible with current engineering can lift 500 million tons a year and since you could only fit about 1000 on earth it would take nearly 10 million years to disassemble the planet. But it can be done only with proven technology, no super materials or new energy sources needed. You could power them using huge convection towers that contain liquid halite, which would be heated by the hot lithosphere you are uncovering. And of course the job would only get easier as the planet is taken apart: less gravity, more heat being radiated, more materials for building and maintaining the loops. That said you still have to use nuclear pulse propulsion to move the material for the first loop into orbit, about 2 million tons of it. But with nuclear pulse propulsion that is doable. We can conquer the cosmos with only what we know today, no soft scifi stuff needed. It will just take a very, very long time. Now of course you can't disassemble stars, or for that matter high mass objects like gas giants. But the earth sized planets or at least large portions of their lithospheres can be consumed.
The Launch Loop - A low cost earth-to-high-orbit launch system LOFSTROM, K H AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference, 21st, Monterey, CA; United States; 8-10 July 1985. 1985

>>2420064
For the Emprah!
>>2419217
>>2419199
>>2419185