They take it with them in some form or another. Fireworks use oxidizing salts such as various nitrates and chlorates. Solid fuel rockets generally use ammonium perchlorate as an oxidizer while liquid fuel rockets carry liquid oxygen.
Fire needs oxygen in order to burn, and there is no oxygen in space, so rockets must take oxygen with them.
because in outer space there is no oxygen
Fireworks. Launching satellites. Servicing the International Space Station.
The Chinese were the first to use rockets, and they used them for fireworks displays. Military or space travel applications came much later.
Surely at least thousands ARE launched everyday, if you include weapons and fireworks. But perhaps you are only interested in rockets that go into space.
Rockets need oxygen to facilitate the chemical reaction for generating thrust. By combining oxygen with fuel in the combustion chamber, rockets produce the hot gases needed to propel the vehicle through space. This enables rockets to overcome the lack of atmospheric oxygen present in space.
Oxygen, and sometimes hydrogen as well.
Oxygen and hydrogen
They invented the rocket yes but not anything that went high enough to go into space, these were gun powdered rockets, the kind we use in fireworks displays, Not spacecraft.
Rockets carry onboard oxygen for combustion to generate thrust, so they can run out of oxygen if not enough is supplied. However, in space, rockets do not need oxygen from the atmosphere to operate as they bring their own supply. Once the oxygen stored onboard is consumed, the rocket will no longer be able to generate thrust and will not be able to maneuver or maintain its intended trajectory.
There is no oxygen in space, so spacecraft must carry oxygen with which to burn their fuel and, if they are manned, to allow the crew to breathe.
Rockets are used for space exploration, satellite deployment, military defense, scientific research, and commercial transportation services. They are also used in fireworks displays, as well as for testing and launching various payloads into outer space.