I mean, the James Webb makes use of such to drop to, what, 20 Kelvin? https://ttu-ir.tdl.org/bitstream/handle/2346/67554/ICES_2016_141.v2.pdf?sequence=1 https:/

I mean, the James Webb makes use of such to drop to, what, 20 Kelvin? https://ttu-ir.tdl.org/bitstream/handle/2346/67554/ICES_2016_141.v2.pdf?sequence=1 https://ttu-ir.tdl.org/bitstream/handle/2346/67554/ICES_2016...