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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?.
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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?.

User Sergei Klinov
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1 Answer

11 votes

Answer:

something is passing infront of it

Step-by-step explanation:

something is orbiting it and blocking its light

User Abhinav Kumar
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