NASA astronauts captured this powerful image 50 years ago.  (Science & Society Picture Library via Getty Images)More

1968 was a crazy year, its events moving at a horrific pace. The Tet Offensive. The My Lai Massacre. Bobby Kennedy announcing the news that the Rev. Martin Luther King Jr. had been assassinated. Bobby Kennedy’s assassination. Riots across urban America and outside the Democratic National Convention. The human drama seemed out of control in a way it

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