The Scale of the Cosmos
Zoom outward in steps of 100
52 ft =
16 meters
1.6 km
1.6 ´ 102 km
1.6 ´ 104 km
1.6 ´106 km
1.6 ´108 km =
1.1 AU
1.6 ´ 1010 km = 1.1´ 102 AU
1.6 ´ 1012 km = 1.1´ 104 AU
1.6 ´ 1014 km = 1.7 ´ 101  ly
1.6 ´ 1016 km = 1.7 ´ 103  ly
1.6 ´ 1018 km = 1.7 ´ 105  ly
1.6 ´ 1020 km = 1.7 ´ 107  ly
1.6 ´ 1022 km = 1.7 ´ 109  ly
Light takes 1.7 billion years to cross this box.

We don’t show a next step because it would light to take 170 billion years to cross that box, longer than the age of the universe as we’ll see in Chapter 15.
(From our Text:  Horizons, by Seeds)