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Questions and Answers
Before Henrietta Leavitt made her discovery, astronomers had already observed ______ stars.
Before Henrietta Leavitt made her discovery, astronomers had already observed ______ stars.
variable
Henrietta Leavitt's observation allowed astronomers to ______ the distances to far-off stars.
Henrietta Leavitt's observation allowed astronomers to ______ the distances to far-off stars.
infer
Henrietta Leavitt spent years ______ thousands of photos of stars.
Henrietta Leavitt spent years ______ thousands of photos of stars.
comparing
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