Convert petameter to light year
Please provide values below to convert petameter [Pm] to light year [ly], or Convert light year to petameter.
How to Convert Petameter to Light Year
1 Pm = 0.10570008340247 ly
Example: convert 15 Pm to ly:
15 Pm = 15 × 0.10570008340247 ly = 1.58550125103706 ly
Petameter to Light Year Conversion Table
| petameter | light year |
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Petameter
A petameter is a unit of length in the metric system equal to 10^15 meters.
History/Origin
The prefix "peta-" for 10^15 was adopted by the CGPM (General Conference on Weights and Measures) in 1975.
Current Use
The petameter is used for measuring distances on a galactic scale, such as the size of the Milky Way galaxy.
Light Year
A light-year is the distance that light travels in a vacuum in one Julian year.
History/Origin
The concept of the light-year as a unit of distance in astronomy emerged in the mid-19th century. The first recorded use of the term was in a German astronomical publication in 1851.
Current Use
The light-year is used to express distances to stars and other astronomical objects on a galactic and intergalactic scale, especially in popular science and non-specialist contexts.