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goldfiish [28.3K]
2 years ago
10

Suppose we observe a cepheid variable in a distant galaxy. The cepheid brightens and dims with a regular period of about 10 days

. What can we learn from this observation?.
Physics
1 answer:
ella [17]2 years ago
6 0

Answer:

something is passing infront of it

Explanation:

something is orbiting it and blocking its light

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