Explanation:

• Alexei Leonov was the first person to talk in space.
• He is a retired Russian cosmonaut, Air Force Major general and writer.
• On 18th March 1965, he became the first human to conduct extravehicular activity (EVA), exiting the capsule during the Voskhod 2 mission for a 12-minute spacewalk.
• In July 1975, He commanded the Soyuz capsule in the Soyuz-Apollo mission, which docked in space for two days with an American Apollo capsule.