✈️⚡ Engineers just tested a jet engine that runs without a single drop of fuel — and the results could change aviation forever. In 2025, aerospace engineers shocked the industry by running an experimental jet engine for 70 hours straight without using traditional fuel. Instead of burning anything, this engine uses superheated plasma to generate thrust — offering a preview of a future where flight is cleaner, faster, and far more efficient. Traditional jet engines depend on combustion, which prod