Convert megameter to light year
Please provide values below to convert megameter [Mm] to light year [ly], or Convert light year to megameter.
How to Convert Megameter to Light Year
1 Mm = 1.0570008340247e-10 ly
Example: convert 15 Mm to ly:
15 Mm = 15 × 1.0570008340247e-10 ly = 1.58550125103706e-09 ly
Megameter to Light Year Conversion Table
| megameter | light year |
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Megameter
A megameter is a unit of length in the metric system equal to 10^6 meters.
History/Origin
The prefix "mega-" for 10^6 was adopted by the CGPM (General Conference on Weights and Measures) in 1873.
Current Use
The megameter is sometimes used to specify the diameters of planets and the distances of satellites.
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.