Why do astronauts need to wear special suit?

Astronauts wear special suits, known as space suits or Extravehicular Mobility Units (EMUs), to protect them from the harsh conditions of space, including extreme temperatures, vacuum, and radiation. These suits provide life support by supplying oxygen for breathing and removing carbon dioxide, while also maintaining pressure around the body. Additionally, they are designed to keep astronauts safe from micrometeoroids and other debris, ensuring their safety during spacewalks and other extravehicular activities.