Linked from

The 14 pages that link to Parsec, each with the reason it gives.

• Cosmic distance ladderRelated: The unit is defined directly by the parallax geometry underlying the ladder’s nearby anchor.

• Proper motionRelated: A star's distance in parsecs converts angular drift into transverse speed.

• Stellar parallaxRelated: A star one parsec away has a parallax angle of one arcsecond.

• Stellar luminosityRelated: Distance is needed to infer luminosity from observed flux.

• Distance modulusRelated: The distance-modulus formula expresses distance in parsecs.

• Dispersion measureRelated: Dispersion measure conventionally integrates electron density over path length measured in parsecs.

• Lookback timeRelated: Astronomers often report source distances in parsecs, which must be interpreted cosmologically at great distances.

• RigelRelated: Rigel’s distance is expressed in parsecs as well as light-years.

• Friedrich Wilhelm BesselRelated: Stellar parallax, demonstrated by Bessel, underlies the parsec’s definition.

• Astronomical system of unitsRelated: It is preferred for stellar distances and connects directly to parallax.