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Different people have differen hobbies according to their interests.

Hobbies are divided into four large classes:doing things, making things, collecting things and learning things.

My hobby is rocket science. I study rockets, rocket engines, and companies that make rockets. my favorite rocket is the UR 500 or PROTON, to put it more simply, it is a Soviet rocket, that rocket can deliver 23.7 tons into small Earth orbit.

My favorite rocket engine is RD-180 this is the information RD-180

And RD-276 this is the information RD-276

My favorite rocket company is SpaceX, it is Elon Musk’s company, which has 4 types of rockets, they are Falcon 9, the first stage of which can return to earth.

Crew Dragon which is the same Falcon 9 just with the crew dragon device

Falcon Heavy These are just two stages from the first stage of the Falcon 9 and in the middle a full-fledged Falcon 9 rocket

Super heavy+starship Super heavy and starship is the craziest rocket Why Because Super have 30 Raptor engines version 3 when it leaves the earth it will become the first fully reusable rocket for flights to Mars and the moon