Spacecraft: People can explore space directly by using spacecraft, such as manned spacecraft like the Space Shuttle or unmanned spacecraft like the Mars Rover. These spacecrafts can carry people or instruments to study and explore space from the inside.
Rockets: People can explore space by launching themselves into space using rockets. This method has been used for many years to send people to space, for example with NASA's Mercury, Gemini, and Apollo programs.
Balloons: People can explore space by using high-altitude balloons. These balloons can carry scientific instruments or people to very high altitudes, from which they can study space and the Earth's atmosphere.
Observatories: People can explore space indirectly by using observatories, such as telescopes. These instruments can be used to study space from the ground and collect data on stars, galaxies, and other celestial bodies.