Last week was the 47th anniversary of Neil Armstrong’s walk on the moon. To celebrate this historic moment, our friends at I Fucking Love Science put together this great video of a “few things you might not have known about the women who helped the men get there.”

“An enormous number of women made huge contributions to the development of human space flight. Without them, it’s possible that humanity would never have reached the moon at all. We should never forget the women who went before us.”

Check out more from I Fucking Love Science.