Convert Earth's equatorial radius to light year
Please provide values below to convert Earth's equatorial radius [R_e] to light year [ly], or Convert light year to Earth's equatorial radius.
How to Convert Earth's Equatorial Radius to Light Year
1 R_e = 6.74169612852383e-10 ly
Example: convert 15 R_e to ly:
15 R_e = 15 × 6.74169612852383e-10 ly = 1.01125441927857e-08 ly
Earth's Equatorial Radius to Light Year Conversion Table
| Earth's equatorial radius | light year |
|---|
Earth's Equatorial Radius
The Earth's equatorial radius is the distance from the center of the Earth to the equator, approximately 6,378.1 kilometers.
History/Origin
The size and shape of the Earth have been a subject of study since ancient times. Modern measurements are made using satellite geodesy.
Current Use
The Earth's equatorial radius is a fundamental parameter in geodesy, geophysics, and astronomy. It is used in cartography and for defining the shape of the Earth.
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.