411 REFERENCE · Wiktionary
Gpc/h
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
Parsec
Symbol
mul symbol
mul astronomy An indeterminate unit of distance between 4/3 Gpc and 2 Gpc. The h is a parameter in the closed interval [0.5, 0.75] and reflects an uncertainty in the Hubble constant.