Ronald Erwin McNair (October 21, 1950 – January 28, 1986) was an American NASA astronaut and physicist. He died during the launch of the Space Shuttle Challenger on mission STS-51-L, in which he was serving as one of three mission specialists in a crew of seven. Prior to the Challenger disaster, McNair flew as a mission specialist on STS-41-B aboard Challenger from February 3 to 11, 1984, becoming the second African American and the first Baháʼí to fly in space. Background McNair was born October 21, 1950, in Lake City, South Carolina, to Pearl M. and Carl C. McNair.