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Star A and star B appear equally bright in the sky, Star Ais 5 times as far away from Earth as star B. This means that star A is times as luminous as star B.
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Star A and star B appear equally bright in the sky, Star Ais 5 times as far away from Earth as star B. This means that star A is times as luminous as star B.

User Guy Benron
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this means that star A is 5 times as luminous as star B
User Jalbee
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Star A would have to be 5 times more bright than Star B.
User Rvandoni
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