Sirius is the brightest star in the sky (but is located in the Southern hemisphere). It has a luminosity of 25.4 LSun and is 2.67 parsec away (1 parsec = 3.086 ×1016 m). What flux is received on Earth from Sirius? How many times smaller is this than the flux from the Sun?

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Sirius is the brightest star in the sky (but is located in the Southern hemisphere). It has a luminosity of 25.4 LSun and is 2.67 parsec away (1 parsec
= 3.086 ×1016 m). What flux is received on Earth from Sirius? How many
times smaller is this than the flux from the Sun?

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