Original sentence: C/S originally launched as a cable network known as Solar USA, a network devoted to American programs.Solar USA was replaced by two separate channels in 2005
Edited sentence: Solar Entertainment first launched its namesake entertainment cable channel in early 2000s, one devoted to American programs.This channel was later known as Solar USA (the acronym stands for "Ultimate in Suspense and Action"), and then later simply as USA.USA was replaced by two separate channels in 2005