Suppose a star is 300 light years away. The number tells you the distance to the star. It also tells you that the light you are seeing started on its journey from the star 300 years ago. If a star that is nine light years away blew up today, when would we know about it?

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Suppose a star is 300 light years away. The number tells you the distance to the star. It also tells you that the light you are seeing started on its journey from the star 300 years ago. If a star that is nine light years away blew up today, when would we know about it?

Physics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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use the same logic as the 300ly star
so 9 light years?
but remember a light year is a distance, if the star blew up today, we wouldn't see it for ....

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10 years?
the star is 9 light years away. the light that leaves that star will take 9 years to get here. 9 years
Oh okay gotcha! Thank you so much! :D

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