The Association of Science and Technology Centers (ASTC) is a network of nearly 700 science and technology centers and museums, and allied organizations, engaging more than 110 million people annually across North America and in almost 50 countries. With its members and partners, ASTC works towards a vision of increased understanding of—and engagement with—science and technology among all people. Founded in 1973, ASTC provides a collective voice, professional support, and programming opportunities for science centers, museums, and related institutions. Through strategic alliances and global partnerships, ASTC's goal is to increase awareness of the valuable contributions its members make to their communities and the field of informal STEM learning and public engagement in science.