Parsec to Light Year Conversion
Convert between Parsec and Light Year quickly and accurately.
How to Convert Parsec to Light Year
Conversion Formula
Example
Convert 15 pc to ly:
Unit Information
Learn about the length units you're converting between
Parsec
pc
Definition
A parsec (symbol: pc) is a unit of length used in astronomy, equal to approximately 3.26 light-years or 30.86 trillion kilometers. It is based on the parallax method of measuring stellar distances and is commonly used for distances to nearby stars.
History/Origin
The parsec was introduced in 1913 by the British astronomer Herbert Hall Turner. The name comes from "parallax of one arcsecond" and is based on the trigonometric parallax method. It became the standard unit for stellar distances in astronomy.
Current Use
Parsecs are used in astronomy for measuring distances to stars, star clusters, and nearby galaxies. They are essential for stellar astronomy, galactic structure studies, and understanding the scale of our galaxy. The unit is particularly useful for distances measured using parallax methods.
Multiplier
3E+16
Offset
0
Light Year
ly
Definition
A light-year (symbol: ly) is a unit of length used in astronomy, equal to the distance that light travels in one year in a vacuum. It is approximately 9.46 trillion kilometers (5.88 trillion miles). This unit is used for measuring distances to stars and galaxies.
History/Origin
The light-year was first proposed in the 19th century as a way to express the vast distances in space. The concept became important with the development of stellar astronomy and the realization of the enormous distances to stars. The modern value is based on the speed of light in a vacuum.
Current Use
Light-years are used in astronomy for measuring distances to stars, galaxies, and other celestial objects. They are essential for understanding the scale of the universe, stellar evolution, and cosmology. The unit helps astronomers communicate about cosmic distances in a more intuitive way.
Multiplier
9E+15
Offset
0
Parsec to Light Year Conversion Table
| Parsec [pc] | Light Year [ly] |
|---|---|
| 1 pc | 3.261564 ly |
| 10 pc | 32.615638 ly |
| 25 pc | 81.539094 ly |
| 50 pc | 163.078189 ly |
| 100 pc | 326.156378 ly |
| 0 pc | 0E+0 ly |
| -10 pc | -32.615638 ly |
| -40 pc | -130.462551 ly |
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