This high school STEM resource explores big unanswered questions about the universe, including the multiverse and the search for alien life, encouraging curiosity and critical thinking. Best for: Astronomy, Physics, STEM, Critical Thinking Includes: • 20 discussion and comprehension questions • Analytical essay prompt • Structured essay with paragraph guidance and sentence starters • Classroom debate activity • Critical thinking discussion questions Grades: 9–12, College, Adult Ed | Print-and-go