Describes the many reasons astronauts perform spacewalks, including collecting samples, fixing equipment, building space stations, and more.

What is a spacewalk? -- The first spacewalk -- The first U.S. spacewalk -- Walking on the moon : the first landing -- Walking on the moon : more explorations -- Fixing the Hubble space telescope -- Space station spacewalks -- Suiting up -- Space suit parts -- Spacewalk training -- Spacewalk safety : floating away -- Spacewalk safety : suit damage -- The future of spacewalks.