Q. A Galactic year is the length of time that takes the Sun to orbit the galaxy. In Earth years, how long is Galactic year?

A
100 million years
B
230 million years
C
620 million years
D
940 million years
Solution:

The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. Estimates of the length of one orbit range from 225 to 250 million terrestrial years.

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