The star Vega has an absolute magnitude of about 4 and an apparent magnitude of about 0. Based on the definitions of absolute and apparent magnitude, we can conclude that .

Question

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The apparent magnitude of a star is how bright it appears from Earth, while the absolute magnitude is how bright it would appear at a standard distance of 10 parsecs. Since Vega has an apparent magnitude of about 0 and an absolute magnitude of about 4, it appears brighter from Earth than it would at 10 parsecs, indicating it is closer than 10 parsecs. Choices A, B, and C do not directly relate to the relationship between apparent and absolute magnitude in determining distance.

The Star Vega Has an Absolute Magnitude of About 4