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.
Some rockets are used for space travel and others are used for war. some other rockets are hand made like baking soda rockets. Rockets carry satellites and astronauts into space, missiles, distress beacons, even pyrotechnics (fireworks) for amusement.
There is no atmosphere or oxygen in space, therefore rockets provide thrust by burning fuel with oxygen on board, or an solid that produces oxygen as needed.
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.
Oxygen and hydrogen
Oxygen, and sometimes hydrogen as well.
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.
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.
fountains,bottle rockets, firecrackers, rockets, novelties, repeaters, roman candles, spinners,and canisters