"The Association of Science - Technology Centers Incorporated (ASTC) is an organization of science centers and museums dedicated to furthering the public understanding of science among increasing diverse audiences." Users can find information about over 550 science centers in 43 countries. Parents and teachers can find out how to make the best out of a museum field trip. The website presents information on traveling exhibitions, conferences, and publications. Users interested in the informal science education field can discover professional development opportunities.