Apr 30, 2010 鈥 By 麻豆传媒 News Services 鈥 In honor of Mother's Day, Lake Afton Public Observatory is offering the following special: Bring mom or grandma to the observatory from 9-11 p.m. Friday, May 7, and Saturday, May 8, for the program "Big, Bigger and Biggest," and they will receive free admission when accompanied by a paying child.