Studying standard candles in globular clusters offered the first conclusive proof that our galaxy was much __________ than originally believed.

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Studying standard candles in globular clusters showed that they are very far away from us and also very bright. By knowing the distance to the globular cluster and the apparent brightness of the standard candle, astronomers were able to calculate the absolute brightness of the standard candle. Comparing the absolute brightness with the apparent brightness allowed astronomers to determine the distance from Earth to the globular cluster. This distance turned out to be much greater than originally believed, indicating that our galaxy is much larger than previously thought.

Studying Standard Candles in Globular Clusters Offered the First Conclusive