What is "galaxi"

Galaxi (also Galaxy) is the common name of a series of mass-produced roller coasters manufactured primarily by Italian company S.D.C, which went bankrupt in 1993. The roller coaster design was first used in the 1970s, and as of 2009, sixteen Galaxi coasters are still in park-based operation, across the North American, European, and Australian continents, with another two "Standing But Not Operating". At least 37 amusement parks are or have previously operated Galaxi coasters; this does not include those owned by funfairs and traveling ride companies.