熊猫实时视频花絮

In 1946, on a remote Pacific Island, the military began a program known as ‘Operation Crossroads.’ Its aim was to capture, on film, the actual moment of an atomic bomb detonation

Capturing a Photograph of an Atomic Bomb Blast (2:54)

NASA is preparing to send a chimpanzee, Ham, into space to test the effects of space on a living creature. He’s received a training regiment to prepare him for the mission ahead

NASA's First Chimp in Space (2:11)

Is a kiss really just a kiss? In this one-minute video, our Ask Smithsonian Host, Eric Schulze, explains why we pucker up.

Ask Smithsonian: Why Do We Kiss? (1:11)

In 1828, John Jacob Astor built a trading post on the Missouri River. Business was so profitable that it only took four decades for Astor to become America's first multimillionaire.

America's First Multimillionaire (2:49)