Explaining on Instagram: "SpinLaunch is a radical space launch concept that aims to send payloads to space without a traditional rocket liftoff 🚀 Instead of burning huge amounts of fuel on the ground, the system uses a massive vacuum sealed centrifuge to spin a projectile up to extreme speeds, then releases it at hypersonic velocity toward the sky. A small rocket engine would ignite after release to finish the trip to orbit. The idea is to dramatically cut launch costs and reduce fuel us