The astronauts headed to the moon in December 1972 thought they knew what to expect. They would soon be exploring the moon's surface in a lunar rover, traveling

"Discusses the iconic Blue Marble photo of Earth taken by the Apollo 17 astronauts in December 1972"--

World War II was in its early days when brutal German dictator Adolf Hitler paid a visit to Paris, the capital of France. Only days before, on June 14, 1940, Ge

No one knew his name. But soon millions would know about his bravery. For almost two months in spring 1989, Beijing's Tiananmen Square had been the site of grow

When it went down in flames, the Hindenburg went down in history. The era of airship travel ended with a disastrous explosion May 6, 1937. Sam ShereÍs photo of