Why does an astronaut wear a special type of suit?

An astronaut wears a special suit, known as a spacesuit, to protect against the harsh conditions of space, such as extreme temperatures, vacuum, and radiation. The suit provides life support by supplying oxygen, removing carbon dioxide, and maintaining pressure. Additionally, it offers protection from micrometeoroids and allows for mobility during extravehicular activities (spacewalks). Overall, the suit ensures the astronaut's safety and functionality in the challenging environment of space.