A specially designed astronomy tent features "Afternoon Solar Viewing" and "Night Sky Network" from 1 to 4 p.m. Saturday, March 16, at Kartchner Caverns State Park, Benson. Tim Hunter of Lunt Solar Systems speaks at 5:30 p.m., in the Discovery Center. Evening star viewing begins at 6:30 p.m.. A $6 entrance fee is waived with a reservation for either of two tours of the caverns for $22, $12.95 for ages 7 through 13 each tour. Visitors should bring a sweater or light jacket. At Catalina State Park, astronomers answer questions and discuss elements of the night sky starting at 6:30 p.m.; $7 per vehicle, camping is $15 to $25. Visitors should bring water, snacks, and a sweater or jacket. Bring a red light to either event to protect night vision.