Garry explained that in programming, developers often leave comments throughout their code to describe to readers what the code is supposed to do. However, it's obvious that IT developers did more than just that. They added in playful messages, puns and pop culture references.

For example, the name for the ignition file in the code is \"BURN_BABY_BURN,\" a phrase popularized by '60s R&B disc jockey Magnificent Montague. One of the developers wrote in a NASA journal that it was a reference to the ongoing Black Power movement.

\"We might not have been out on the streets, but we did listen to the news, and the two biggest news stories were Viet Nam and Black Power, the latter including H. Rap Brown and his exhortations to 'Burn Baby, Burn' -- this was 1967, after all,\" developer Peter Adler wrote in the journal.

\"PHOTO:
MIT/NASA
PHOTO: Part of the source code MIT programmers wrote for Apollo 11's flight software is pictured here in a screenshot from the source code posted to GitHub by former NASA intern Chris Garry.
>

In a block of code a few hundred lines down, a developer put in the comments \"HELLO THERE\" in the first line and then \"GOODBYE AGAIN SOON\" in the last line.

\"PHOTO:
MIT/NASA
PHOTO: Part of the source code MIT programmers wrote for Apollo 11's flight software is pictured here in a screenshot from the source code posted to GitHub by former NASA intern Chris Garry.
>

Another file in the source code is titled \"PINBALL_GAME_BUTTONS_AND_LIGHTS,\" a reference to a popular arcade game at the time. That file apparently contained the code that ran the program for the keyboard and display system.

Within that file is another Easter egg: a quote from William Shakespeare's \"Henry V.\"

\"PHOTO:
MIT/NASA
PHOTO: Part of the source code MIT programmers wrote for Apollo 11's flight software is pictured here in a screenshot from the source code posted to GitHub by former NASA intern Chris Garry.
>

Another line of code showed that a code that a programmer hoped would just be temporary ended up being used in the final version.

\"PHOTO:
MIT/NASA
PHOTO: Part of the source code MIT programmers wrote for Apollo 11's flight software is pictured here in a screenshot from the source code posted to GitHub by former NASA intern Chris Garry.
>

In that same file, there’s also a line that appears to instruct astronauts to \"PLEASE CRANK THE SILLY THING AROUND\" before going \"OFF TO SEE THE WIZARD.\"

\"PHOTO:
MIT/NASA
PHOTO: Part of the source code MIT programmers wrote for Apollo 11's flight software is pictured here in a screenshot from the source code posted to GitHub by former NASA intern Chris Garry.
>

\"As you can see, there are humorous comments riddled all over the code,\" Garry told ABC News. \"It's obvious that these guys had a lot of fun writing this code, and we developers have been having a lot of fun reading it.\"

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