Complex sentence: The player is cast as the commander of the U.N.S. "Apollo", humankind's first interstellar vessel, which was dispatched at sub-light speeds to investigate the source of a mysterious signal broadcast at Earth from one hundred and fifty light years away.
Split into simpler sentences: The player is cast as the commander of the U.N.S. "Apollo", humankind's first interstellar vessel. She was dispatched at sub-light speeds to investigate the source of a mysterious signal broadcast at Earth from one hundred and fifty light years away.