It was amazing to be at the Johnson Space Center today at 3:18 p.m. (CDT), when the Apollo 11 lunar module landed in the moon’s Sea of Tranquility 47 years ago. This is Mission Operation Control Room 2, and from the little speaker beside the sign for the Public Affairs Officer, people heard Astronaut Neil Armstrong say these words:

Houston, Tranquility Base here. The Eagle has landed.

And here’s what it looked like inside that room when it happened: