Complex sentence: As the second module sent into orbit by the company, this spacecraft builds on the data and experience gleaned from its previously orbited sister-ship "Genesis I" to continue testing the long-term viability of expandable space structures.
Split into simpler sentences: As the second module sent into orbit by the company, this spacecraft builds on the data and experience gleaned from its previously orbited sister-ship "Genesis I". It remains in orbit which allows to continue testing the long-term viability of expandable space structures.