Soviet member of the first cosmonaut group who was part of the missions Voskhod 2 and Soyuz 19/ASTP.
In 1960, Alexey was selected as one of twenty Soviet Air Force pilots selected to be part of the cosmonaut program.
He was a cosmonaut and the first human to embark on a space walk.
He married Svetlana Pavlovna Dozenko.
He wrote a book with astronaut Neil Armstrong.