A Snoopy cap, or communication cap, is a part of a

space suit A space suit or spacesuit is a garment worn to keep a human alive in the harsh environment of outer space, vacuum and temperature extremes. Space suits are often worn inside spacecraft as a safety precaution in case of loss of cabin pressure ...

worn by American astronauts on the head and incorporating an audio headset for communication. The cap is nicknamed after the Peanuts character, whom its black and white paneling resembled. Its

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedi ...

designation is Communications Carrier Assembly. The "Snoopy cap" includes two earphones and two microphones, to tolerate failure of a single unit.

References

Space suit components Headgear Peanuts (comic strip) {{NASA-stub