NASA conducts spacewalk as world's 1st spacewalker dies

Astronauts replaced oversized batteries outside the International Space Station on Friday, as news broke of the death of the world's first spacewalker.NASA interrupted live TV coverage of its second spacewalk this week to announce Leonov's death at age 85.Leonov's 12-minute spacewalk on March 18, 1965, preceded the first U.S. spacewalk by Ed White by less than three months.