Cosmonaut dies
Nikolayev suffered a heart attack on Saturday in Cheboksary, the capital of his native Chuvash Autonomous Republic, where he was judging the All-Russian rural sport games.
Nikolayev became Russia’s third cosmonaut to travel into space when he and Cosmonaut Pavel Popovich were launched in separate crafts in August 1962. The pair made the first simultaneous flights, and Nikolayev set a separate endurance record, circling the Earth 64 times in 96 hours.