- #1
Holocene
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Cepheid variable star?
How was Hubble able to determine that one of these stars was within what was then called a nebula?
You're telling me that back in the early 1900's, he was able to detect a single star within a distant galaxy?
How was Hubble able to determine that one of these stars was within what was then called a nebula?
You're telling me that back in the early 1900's, he was able to detect a single star within a distant galaxy?