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xkforce ,

5 years ago or so and 5 or 6 hours in the future

lugal ,

Thanks! What is the unite?

xkforce ,

z values refer to red/blueshifts and correspond to time periods in the universe’s history. In reality thats a vast oversimplification but given the way the comic is using z values, those two time periods are what they were intending to convey

lugal ,

Ok, cool that makes sense. I have a rough idea what redshift is, I just didn’t read the title. Thanks!

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