Convert X-unit to light year
Please provide values below to convert X-unit [X] to light year [ly], or Convert light year to X-unit.
How to Convert X-Unit to Light Year
1 X = 1.05919939575948e-29 ly
Example: convert 15 X to ly:
15 X = 15 × 1.05919939575948e-29 ly = 1.58879909363921e-28 ly
X-Unit to Light Year Conversion Table
| X-unit | light year |
|---|
X-Unit
An X-unit is a unit of length approximately equal to 1.002 x 10⁻¹³ meters.
History/Origin
The X-unit was proposed by the Swedish physicist Manne Siegbahn in 1919 for measuring the wavelengths of X-rays and gamma rays.
Current Use
The X-unit has been largely replaced by the angstrom and the picometer.
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.