Surprising first audio from Ingenuity on Mars
For the first time ever, a spacecraft on another planet has recorded sound from an entirely separate spacecraft. Learn why scientists are surprised by what they heard.
How to Make a Fat Man
"Fat Man" was the codename for the implosion-type nuclear weapons designed by Los Alamos scientists to help end World War II. The NSRC has the only-known step-by-step manual still in existence.
Secret City Babies
Los Alamos was so secret that in some cases, it didn’t even exist. Like on the birth certificates of the babies who were born here during the Manhattan Project era. Instead of listing a city, these official documents just listed an address: P.O. Box 1663.