In a Week of Space Tragedy Anniversaries, We Must Continue to Venture Onward

Friday is the 50th anniversary of the Apollo 1 fire that killed three astronauts. I wrote the following article a few years ago, but my feelings have not changed at all. Space calls to us, and we must answer, even when we know we will lose people along the way. We can minimize this loss, but we cannot eradicate it. If you ask any astronaut, I expect they would agree. Today marks the second in a week of three tragic anniversaries in space exploration. On Jan. 27, 1967, we lost three astronauts in...