Manned spaceflight refers to the journey of humans into outer space, typically aboard a spacecraft. This endeavor allows astronauts to conduct scientific research, explore celestial bodies, and experience weightlessness. Notable missions include those conducted by NASA and SpaceX, which have advanced our understanding of space and technology. The first successful manned spaceflight was achieved by Yuri Gagarin in 1961, marking a significant milestone in the Space Race. Since then, various space agencies have developed programs to send humans to the International Space Station and beyond, paving the way for future exploration of the Moon and Mars.