Spaceflight 🚀📆 2023 This #SBSP study by #Astrostrom for #ESA proposes a 29,339 m2 #solar ☀️ collector at the #Lagrange point, #SolarPanels from #Lunar 🌙 materials, transported by a #SpaceElevator 🚠 from the #Moon https://nebula.esa.int/sites/default/files/neb_study/2753/C4000136309ESR.pdf
T1200-grade fibre has a tensile strength 💪 10 times greater than ordinary steel, yet it is less than one-tenth of a human hair in diameter. Using 120,000 carbon-fibre filaments twisted together, the carbon-fibre rope has a diameter of under 2mm when taut. It is strong enough to tow a coach 🚍 loaded with 54 adults https://www.scmp.com/news/china/science/article/3346398/china-beats-us-japan-carbon-fibre-arms-race-create-worlds-first-t1200-factory
Today there are three known materials strong enough for a #SpaceElevator: carbon nanotubes, hexagonal boron nitride, and single crystal graphene. Single crystal #graphene is currently the most promising. https://www.isec.org/space-elevator-tether-materials
In graphene, the #carbon forms a sheet of interlocked atoms as hexagons one carbon atom ⚛️ thick https://en.wikipedia.org/wiki/Graphene