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Use the Luminosity Distance Formula. Find the distance to a star (L=3.9x1026 watts) whose apparent brightness at Earth is 2.0 x10-10 watt/m2. Formula: Apparent Brightness

Use the Luminosity Distance Formula. Find the distance to a star (L=3.9x1026 watts) whose apparent brightness at Earth is 2.0 x10-10 watt/m2. Formula: Apparent Brightness (AB) = Luminosity / 4 r2 A 4.876 x 10-17m B 4.876 x 1017m C 3.939 x 10-17m D 3.939 x 1017m

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