// Workers AI · dad joke modeWhy was S0 sad? Because it had a zero social life.

S0 may refer to:

• S0 Truss, an element of the International Space Station
• S⁰, elemental sulfur
• IATA airline designator for Aerolíneas Sosa
  • Previously, IATA airline designator for Slok Air Gambia (disestablished)
• the representation of the number 1 in Peano arithmetic
• ACPI S0 power state in computing
• S0 galaxy, an astronomical code for barless lenticular galaxy
• S0, part of the name of certain stars within one arc-second of Sagittarius A*
• S0 (DIN 43864), an output from electricity meters that give pulses proportional to the amount of consumed energy
• the S0 interface bus used in ISDN BRI in telephony

See also

• SO (disambiguation)
• 0S (disambiguation)
• 42nd Street Shuttle, signed as S but internally designated as 0