What are rockets today powered by?

Today, rockets are powered by a variety of propulsion systems, primarily utilizing liquid and solid propellants. Liquid rockets use a combination of liquid fuels, such as kerosene or hydrogen, and oxidizers, while solid rockets rely on a pre-made solid fuel mixture. Additionally, some modern rockets are experimenting with hybrid systems that combine elements of both. Advancements in technology also explore green propellants that aim to reduce environmental impact.