there is still a picture of human astronauts on the lunar surface, which was left by astronaut Charlie Duke during his mission to the moon in 1972. He was the tenth astronaut to land on the moon and the youngest when he landed on the moon.

what kind of picture is this? The answer is the astronaut's own family photo:

the full picture of the family photo is as follows:

the Duke and their two sons can be seen in the group photo. On the back of the photo, Duke wrote the following sentence:

\ "This is the family of astronaut Charlie Duke from planet Earth who landed on the moon on April 20, 1972.\"

"this is the family of astronaut Charlie Duke, from Earth, who landed on the moon on April 20, 1972."

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Duke said that he didn't have many opportunities to spend time with the children because of his work. In order to make the children happy and make them feel how exciting their father's task was, he decided to "take the whole family to the moon"-in the form of pictures, of course.

for now, this picture is still on the moon, but Duke and other netizens are not optimistic about its fate-the photo may have seriously faded. Now we don't know exactly what this picture looks like, because it is too small to be captured by a probe orbiting the moon.

Source:

http://www.independent.co.uk/news/science/apollo-16-astronaut-explains-hidden-message-behind-the-family-portrait-he-left-on-the-moon-a6718111.html

https://en.wikipedia.org/wiki/Charles_Duke