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Vaselesa [24]
4 years ago
14

[OU.01] The light from Andromeda galaxy takes about 2.6 million years to reach Earth. Which of these statements is correct about

the Andromeda galaxy?
Physics
1 answer:
Dafna1 [17]4 years ago
7 0
Your options are:
A) It is located at a distance of 2.6 million light years from Earth.
B) It has to travel a distance of 2.6 million kilometers to reach Earth.
C) It can be photographed by a space telescope in 2.6 million years.
<span>D) It has to move at the rate of 2.6 million kilometers per hour to reach Earth

You need to remember the definition of lightyear: one lightyear is the distance that light can travel in one year through space. It is a measure of astronomical distances and it is equal to 9.5×10¹²km.

Therefore, if light takes 2.6 million years to reach Earth, it means that the Andromeda Galaxy is at a distance of 2.6 million lightyears from Earth. 

Hence, the correct answer is A) </span><span>It is located at a distance of 2.6 million light years from Earth.</span>
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