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A comment on Taking a Picture of a Supernova While Setting Up a New Camera. Parent comment

Re:Taking a Picture of a Supernova While Setting Up a New Ca... by quickthrower2 on Wednesday February 21, 2018 @11:35PM (#16435177)
Does 80 million light years mean 80 million years ago? If the star is moving away from us fast...
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Re:Taking a Picture of a Supernova While Setting Up a New Ca... by Cthulhu_ on Thursday February 22, 2018 @07:49AM (#16437179)
I think so; while it is moving away from us, 80 million years ago it exploded and sent its light our way. Because it's moving away from us, the light is stretched out a bit, causing red shift, allowing us to have a good idea of distance / time.

I don't know how far the remains have traveled from us since then though.

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