mobyhead1 t1_j9tfejb wrote
Reply to comment by OhioVsEverything in Would an Earth-like planet with identical technology be able to detect signals from us? by lukinhasb
There is a caption, with an arrow pointing at the blue dot that reads “200 light years in diameter.”
The Earth is only about 8,000 miles in diameter.
The arrow isn’t pointing at the box.
Therefore the blue dot is a volume of space 200 light-years in diameter.
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