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12.09.2022 02:52
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You are observing a star that is 250 million light years away. From the starlight

You are observing a star that is 250 million light years away. From the starlight you are observing now, the appears to be 30 million years old and you determine that the star has a lifetime of 120 million years. How long will it be until Earth receives light from the supernova that occurs at the end of the life of the star
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leo4687
leo4687
4,7(45 marks)
1 and a half miles !!

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