Armstrong had heart surgery earlier this month and has died from a complication from the procedures.
"We are heartbroken to share the news that Neil Armstrong has passed away following complications resulting from cardiovascular procedures," his family said in a statement. "For those who may ask what they can do to honor Neil, we have a simple request. Honor his example of service, accomplishment and modesty, and the next time you walk outside on a clear night and see the moon smiling down at you, think of Neil Armstrong and give him a wink."
Armstrong first entered space on the Gemini 8 mission. The second time was upon Apollo 11. On July 20, 1969, Neil Armstrong stepped off the latter craft and onto the moon, becoming the first human in history to step foot on it.
After leaving NASA, he taught engineering at the University of Cincinnati for about ten years.
Over the years, the myths and stories surrounding the moon landing have soared, and Armstrong has been heavily lauded. He always remained humble though, despite his enormous accomplishment.
The flag he planted may have blown over, but many more he inspired remain.
And his first words on the moon will live on forever in the annuls of history because of the truth they spoke to: "That's one small step for man, one giant leap for mankind."