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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?
 one year ago
 one year ago
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?
 one year ago
 one year ago

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JFraserBest ResponseYou've already chosen the best response.1
use the same logic as the 300ly star
 one year ago

HorseCrazyGirlForeverBest ResponseYou've already chosen the best response.0
so 9 light years?
 one year ago

JFraserBest ResponseYou've already chosen the best response.1
but remember a light year is a distance, if the star blew up today, we wouldn't see it for ....
 one year ago

HorseCrazyGirlForeverBest ResponseYou've already chosen the best response.0
10 years?
 one year ago

JFraserBest ResponseYou've already chosen the best response.1
the star is 9 light years away. the light that leaves that star will take 9 years to get here. 9 years
 one year ago

HorseCrazyGirlForeverBest ResponseYou've already chosen the best response.0
Oh okay gotcha! Thank you so much! :D
 one year ago
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