Question

The light from Andromeda galaxy takes about 2.6 million years to reach Earth. Which of these statements is correct about the Andromeda galaxy?
A)Its 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.
D)it has to move at the rate of 2.6 million kilometers per hour to reach earth.

Answer 1

Hint: (from Wiki)
A light-year (abbreviation: ly), sometimes written light year,[2] is a unit of length used informally to express astronomical distances.

Answer 2

Thank you so much! @mathmate

Answer 3

You're welcome! :)

Answer 4

:)