Is it true that is swiss air a member of star alliance based on the following text?

Although Star Alliance invited Lineas Aereas Azteca in 2005 to join in mid-2007, the airline filed for bankruptcy. TAP Air Portugal joined on 14 March 2005, adding African destinations to the network. In April 2006 Swiss International Air Lines, the alliance's sixth European airline, and South African Airways (its first African carrier) became the 17th and 18th members.
yes