Question 399210: How long does it take for a photon from sirius at a distance of 2.63 parsecs to reach your eye here on earth? for this question i need to know what math to use and have to show all work, im very lost and need help!!!!
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! How long does it take for a photon from Sirius at a distance of 2.63 parsecs
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We need to know how far is a par sec.
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A par sec is 3.262 light years
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Find the distance to Sirius: 2.63 * 3.232 = 8.57906 light years (The closest star, we can see)
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A photon travels at the speed of light therefore, it will take 8.57906 yrs to reach earth.
That's about 8 yrs, 7 months
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