Contents

• 1. Preface
• 1.1. Tacit Knowledge
• 1.2. Projects
• 1.3. ACS versions
• 1.4. A Historical Note
• 1.5. Acknowledgments
• 2. ACS Manifesto
• 2.1. A Celestial Lab
• 2.2. Research = Education
• 2.3. Open Knowledge
• 2.4. Dialogues
• 2.5. Audience