📅 2023 MIT Science Bowl High School Invitational🎓 HS🔄 Round 1#️⃣ Question 20🌟 BONUS✍️ Short Answer
By name or number, rank the following three events during the typical formation of a star in chronological order: 1) Crossing the birth line 2) Free-fall collapse 3) Shock wave hits a molecular cloud
✔️Answer:3, 2, 1
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