To help compare different distances this page lists lengths starting at 1018 m (1 Em or 110 light years). Distances shorter than 1018 m 1.4×1018 m — 145 light years — Diameter of Messier Object 13 (a typical globular cluster) 2.1×1018 m — 200 light years — Diameter of the Eta Carinae Nebula 3.1×1018 m — 310 light years — Distance to Canopus according to Hipparcos 4.0×1018 m — 430 light years — Distance to Bet… (More on Exametre)