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Which of these properties is the best measure of a star's brightness?(1 point)
Responses
age
age
apparent magnitude
apparent magnitude
absolute magnitude
absolute magnitude
size
Answers
GPT-4o mini
The best measure of a star's brightness is **absolute magnitude**.
**Apparent magnitude** refers to how bright a star appears from Earth, while **absolute magnitude** measures the intrinsic brightness of a star at a standard distance (10 parsecs). Comparing these helps astronomers understand a star's true brightness.
Size can also influence brightness, but absolute magnitude is the most direct measure.
**Apparent magnitude** refers to how bright a star appears from Earth, while **absolute magnitude** measures the intrinsic brightness of a star at a standard distance (10 parsecs). Comparing these helps astronomers understand a star's true brightness.
Size can also influence brightness, but absolute magnitude is the most direct measure.