When Apollo 11 landed at the Sea of Tranquility 44 years ago today, eight years and two months after Kennedy challenged the nation to a manned lunar landing, it marked the end of the Space Race as defined by the race to the Moon. But there’s a little known facet of this historic event: whether or not NASA would be able to send Apollo 11 on it’s planned mission was called into question just three days before launch when the Soviet Union launched Luna 15 on a lunar sample return mission. The worry wasn’t that Luna 15 would overshadow Apollo or somehow physically prevent it from reaching its goal. Rather, NASA was concerned that communications between Luna 15 and Moscow would disrupt communications between Apollo 11 and Houston. It was Apollo 8 commander Frank Borman who saved the day, securing the flight plan of Luna 15 and assuring NASA the two missions wouldn’t cross paths. The whole story, including astronomers at the Jodrell Bank Observatory listening in on both missions, is detailed in my latest article at DVICE. (You can listen to the Jodrell recording here.)
Earlier this month, the Military Channel aired the Apollo 11/Air Force One episode of “America: Fact vs. Fiction” for which I was interviewed along with author Francis French about the lunar landing. Here’s the (overly sensationalized) clip that talks about the intersection between Apollo 11 and Luna 15.