Complex sentence: It was inaugurated by King Juan Carlos I of Spain, and more than 500 astronomers, government officials and journalists from Europe and Americas attended the ceremony, including several astronomers, officials and alumni from the University of Florida.
Split into simpler sentences: It was inaugurated by King Juan Carlos I of Spain. More than 500 astronomers, government officials and journalists from Europe and Americas attended the ceremony, including several astronomers, officials and alumni from the University of Florida.