📅 NSB Round Robin 2009🎓 HS🔄 Round 9#️⃣ Question 21❓ TOSS-UP✍️ Short Answer
Which 2 of the following 4 factors most directly determine the apparent visual magnitude of a star: distance from Earth; intrinsic brightness; color; age
✔️Answer:DISTANCE FROM EARTH; INTRINSIC BRIGHTNESS
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