Which Apollo mission had the lunar module named 'Snoopy' and the command module 'Charlie Brown'?

The Apollo 10 lunar module was named 'Snoopy' and the command module 'Charlie Brown'. While not included in the official mission logo, Charlie Brown and Snoopy became semi-official mascots for the mission. Schulz also drew some special mission-related artwork for NASA, and several regular strips related to the mission, one showing Snoopy en route to the Moon atop his doghouse with a fishbowl on his head for a helmet.

"We have mentioned," wrote television producer Lee Mendelson, "that Charles Schulz is a gambler, a man who doesn't sit pat on success. The New York Times headlined: 'Creator of Peanuts Tempts Fate on Apollo Mission.' Certainly, if a tragedy had occurred, as well it might have, the symbols would forever remain in man's mind as symbols of disaster. But Sparky has always had faith in the Apollo program, from the very start, and he felt if those men could risk their lives, the least he could do would be to risk the popularity of the characters".

The strip that ran on July 21, 1969 – one day after the Apollo 11 lunar module Eagle landed on the Moon – included a full Moon in the background, with a black mark on it representing the module.

The fabric cap worn by NASA astronauts as part of the Extravehicular Mobility Unit is known as a "Snoopy cap", a reference to how the white crown and black earflaps of the cap resemble Snoopy's fur and ears.