Born on This Day
NASA's first Black female engineer who focused on the airflow around aircraft.
Founder of Playboy magazine, which helped shape the sexual revolution of the 1960s.
Singer-songwriter known for 2019's crossover country-rap hit "Old Town Road."
The Houston Astrodome opens, the world's first indoor, air-conditioned domed sports stadium. A year later, the Dome made history again when it showcased the first installation of Astroturf.
Timeline
Discover more of the major events, famous births, notable deaths and everything else history-making that happened on April 9th
History Every Day
Uncover fascinating moments from the past every day! Learn something new with key events in history, from the American Revolution to pop culture, crime and more.