A "spacewalk," also known as an extravehicular activity (EVA), is when astronauts leave the safety of their spacecraft to work in the vacuum of outer space. During a spacewalk, astronauts wear special suits that provide oxygen and protect them from extreme temperatures and radiation. This allows them to perform tasks like repairing equipment or conducting experiments outside the International Space Station. Spacewalks are essential for maintaining and upgrading space missions. Astronauts often use tools and equipment designed for use in zero gravity, making their work both challenging and exciting. Each spacewalk is carefully planned and can last several hours, showcasing the incredible skills and bravery of the astronauts involved.