听力原文: Adults and children alike are invited to attend the 34th annual Astrofest at the University main campus, held from Friday, September 17th to Sunday the 19th. Astrofest is a nationally recognized conference of amateur telescope makers and star gazers. There will be guest speakers, workshops, planetarium shows, an astrophotography contest, an all-night classic sci-fi film festival, and a large area for commercial vendors. Admission is free. For more information call 512-0767. Why is the announcement being made?