Question

I need help with this astronomy problem thanks? Imagine a photon of light traveling the different paths in the Milky Way described in the following list. Rank the paths based on how much time the photon takes to complete each journey, from longest to shortest. accross the diameter of the central buldge through the disk from top to bottom from the sun to the center of the galaxy across the diameter of the galactic disk across the diameter of the galactic halo

Answer 1

Longest to Shortest:

across the diameter of the galactic halo -  200,000 light years
across the diameter of the galactic disk -  100,000 light years
from the sun to the center of the galaxy - 26,000 light years
across the diameter of the central buldge - 20,000 light years
through the disk from top to bottom - 1,000 light years.