Complex sentence: It initially featured a Minolta MS-8 starball projector, but in 2009, the University of Washington partnered with the Microsoft Research division to bring the WorldWide Telescope software to the planetarium.
Split into simpler sentences: It initially featured a Minolta MS-8 starball projector. In 2009, the University of Washington partnered with the Microsoft Research division to bring the WorldWide Telescope software to the planetarium.