Question

when we see the sun rising 8 1/4 minutes after it has actually risen. why

Answer 1

The sunrise is advanced due to atmospheric refraction of sunlight. An observer on the earth sees the sun two minutes before the sun reaches the horizon. A ray of sunlight entering the earth's atmosphere follows a curved path due to atmosphere refraction before reaching the earth.

Answer 2

because the light takes eight minutes and twenty seconds. so we see eight minutes twenty seconds old light
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