Editing Apollo 10 (section)

===Call signs and mission insignia===
[[File:Stafford and Snoopy.jpeg|thumb|left|En route to launch, Stafford touches a "Snoopy" doll]]

The command module was given the call sign "Charlie Brown" and the lunar module the call sign "Snoopy". These were taken from the characters in the comic strip, ''[[Peanuts]]'', [[Charlie Brown]], and [[Snoopy]].{{sfn|Orloff & Harland|p=256}} These names were chosen by the astronauts with the approval of [[Charles M. Schulz|Charles Schulz]], the strip's creator,<ref name="snoop" /> who was uncertain it was a good idea, since Charlie Brown was always a failure.{{sfn|French & Burgess|p=1348}} The choice of names was deemed undignified by some at NASA, as were the choices for Apollo 9's CM and LM ("Gumdrop" and "Spider"). Public relations chief [[Julian Scheer]] urged a change for the lunar landing mission.{{sfn|Brooks|pp=301–302}} But for Apollo 10, according to Cernan, "The P.R.-types lost this one big-time, for everybody on the planet knew the klutzy kid and his adventuresome beagle, and the names were embraced in a public relations bonanza."{{sfn|Cernan|p=1156}} Apollo 11's call signs were "Columbia" for the command module and "Eagle" for the lunar module.{{sfn|Orloff & Harland|p=280}}

Snoopy, Charlie Brown's dog, was chosen for the call sign of the lunar module since it was to "snoop" around the landing site, with Charlie Brown given to the command module as Snoopy's companion.<ref>{{Cite web |last=Alaina |date=May 16, 2019 |title=Snoopy, Charlie Brown and Apollo 10 |url=https://www.kennedyspacecenter.com/blog/snoopy-charlie-brown-and-apollo-10 |access-date=June 19, 2022 |publisher=[[Kennedy Space Center]]}}</ref> Snoopy had been associated for some time with the space program, with workers who performed in an outstanding manner awarded silver "[[Silver Snoopy award|Snoopy pins]]", and Snoopy posters were seen at NASA facilities, with the cartoon dog having traded in his [[World War I]] aviator's headgear for a space helmet.<ref name="snoop" /> Stafford stated that, given the pins, "the choice of Snoopy [as call sign] was a way of acknowledging the contributions of the hundreds of thousands of people who got us there".{{sfn|Stafford & Cassutt|p=547}} The use of the dog was also appropriate since, in the comic strip, Snoopy had journeyed to the Moon the year before, thus defeating, according to Schulz, "the Americans, the Russians, and that stupid cat next door".<ref name="snoop">{{Cite news |last=Roberts |first=Steven V. |date=May 26, 1969 |title=You're a brave man, Charlie Brown |url=https://timesmachine.nytimes.com/timesmachine/1969/05/26/issue.html |url-access=subscription |work=[[The New York Times]] |page=20}}</ref>

[[File:Apollo 10 Flown Silver Robbins Medallion (SN-70).jpg|thumb|Apollo 10 space-flown silver [[NASA space-flown Robbins medallions of the Apollo missions|Robbins medallion]]]]
The shield-shaped mission insignia shows a large, three-dimensional [[Roman numerals|Roman numeral]] X sitting on the Moon's surface, in Stafford's words, "to show that we had left our mark". Although it did not land on the Moon, the prominence of the number represents the contributions the mission made to the Apollo program. A CSM circles the Moon as an LM ascent stage flies up from its low pass over the lunar surface with its engine firing. The Earth is visible in the background. On the mission patch, a wide, light blue border carries the word APOLLO at the top and the crew names around the bottom. The patch is trimmed in gold. The insignia was designed by Allen Stevens of [[Rockwell International]].<ref>{{Cite web |last=Hengeveld |first=Ed |date=May 20, 2008 |title=The man behind the Moon mission patches |url=http://www.collectspace.com/news/news-052008a.html |access-date=July 18, 2009 |publisher=[[collectSPACE]]}} "A version of this article was published concurrently in the [[British Interplanetary Society]]'s ''[[Spaceflight (magazine)|Spaceflight]]'' magazine." (June 2008; pp. 220–225).</ref>