- Distances shorter than 1018 m
- 1 Em = 1000 Pm (110 ly)
- 1.6 × 1018 m -- diameter of M13 (a typical globular cluster)
- 6 × 1018 m -- diameter of Omega Centauri (one of the largest known globular clusters, perhaps containing over a million stars)
- Distances longer than 1019 m