ronald mcnair

On January 28, 1986, NASA Challenger mission STS-51-L ended in tragedy when the shuttle exploded 73 seconds after takeoff.  On board was physicist Ronald E.…

Twenty five years ago today, the space shuttle Challenger, exploded only 73 seconds after take-off, in front of a horrified world-wide audience. I doubt that anybody who was alive to see shuttle explode, will ever forget it. The entire flight crew of seven were killed, with the only African-American on board being Dr. Ronald McNair. […]