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The table below shows the approximate distances of two stars from Earth. Name of star

Approximate distance from Earth (in light years):
Sirius - 8.6 Light Years
Epsilon Eridani - 10.5 Light Years

A scientist uses a space telescope to photograph the two stars. Which of these is a correct conclusion about the photographs of the two stars as taken by the scientist?

a. It takes more than 10 years to photograph Sirius.
b. It takes more than 10 years to photograph Epsilon Eridani.
c. The photographs show a more recent picture of Sirius than Epsilon Eridani.
d. The photographs show a more recent picture of Epsilon Eridani than Sirius.

Respuesta :

pmayl
The correct answer is C) The photographs show a more recent picture of Sirius than Epsilon Eridani.

A light year is a measure of distance, but a rather unusual one. It is the amount of time it takes light to travel from a point to your eye. In this case, it takes 8.6 years for light from Sirius to reach Earth, and 10.5 years from Epsilon Eridani to do the same. 

That means that when one looks at these stars, they are seeing an 8.6 year old and 10.5 year old image of the stars, respectively. Therefore, that of SIrius is the more recent image. 
umkitty

Answer:

C

Explanation:

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