Rocket Fuel Creates Spectacle in Night Sky Over Us

A bright streak of light surprised skywatchers across the US on May 17th. The phenomenon was initially mistaken for STEVE, a type of aurora. However, astronomer Jonathan McDowell identified the light as a fuel dump from a rocket stage. The event occurred after LandSpace Technology launched its Zhuque-2E Y2 rocket. The rocket released methalox fuel at an altitude of 250 kilometers. Methalox, a fuel made from methane and liquid oxygen, is gaining popularity in the aerospace industry. Methalox is cheaper, cleaner, and easier to store than traditional rocket fuels. It can also be produced on Mars, making it ideal for crewed missions. The fuel's reaction with the ionosphere creates a visible glow. As methalox becomes more common, similar sightings may increase.