Explaining The Universe on Instagram: "The Astra rocket engine is a compact and efficient propulsion system developed by Astra Space for its small launch vehicles, designed to carry lightweight satellites into orbit. Using a combination of liquid oxygen (LOX) and refined kerosene (RP-1) as propellants, the engine operates on a pump-fed design that balances simplicity with performance. Astra’s engines are built with a focus on rapid manufacturing, low cost, and reliability—key factors for frequen