The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years or 206,265 …

Jul 29, 2022 · A parsec is a unit of distance that is often used by astronomers as an alternative to the light-year, just as kilometers can be used as an alternative to miles.

Dec 3, 2025 · Parsec, unit for expressing astronomical distance that is equal to 3.26 light-years.

May 21, 2024 · What is a Parsec? A parsec is an astronomical unit of measurement that is equivalent to 3.26 light years distance, or the distance photons will travel in vacuum over the …

Jan 15, 2025 · A parsec is defined as the distance at which one astronomical unit (AU) subtends an angle of one arcsecond. One AU is the average distance between the Earth and the Sun, …

Nov 14, 2013 · Basically, it's a unit of length used to measure the astronomically large distances between objects beyond our Solar System. One parsec is the distance at which one …

Sep 19, 2025 · One parsec is equivalent to approximately 3.26 light-years, or about 19 trillion miles. This unit of measurement allows astronomers to accurately describe the vast distances …

The word parsec is a shortened form of a distance corresponding to a parallax of one second, coined by the British astronomer Herbert Hall Turner in 1913. [4] The unit was introduced to …

Jan 19, 2024 · So what is a parsec? Exactly what that distance is, though, is a little harder to define. Well, no, a definition is easy: a parsec is defined as “the distance at which 1 AU …

May 30, 2025 · A parsec (pc) is a unit of distance used to measure the vast scales of our universe. It is defined as the distance at which one astronomical unit (the average distance …