Consider a bright star in our night sky. Assume its distance from Earth is 89.1 light-years...
Consider a bright star in our night sky. Assume its distance from Earth is 89.1 light-years (ly) and its power output is 4.00 ✕ 1028 W, about 100 times that of the Sun. One light-year is the distance traveled by light through a vacuum in one year.
(a) Find the intensity of the starlight at the Earth.
Your response differs significantly from the correct answer. Rework
your solution from the beginning and check each step carefully.
W/m2
(b) Find the power of the starlight the Earth intercepts. (The
radius of Earth is 6.38 ✕ 106 m.)
MW
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Consider a bright star in our night sky. Assume its distance
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