Convert Earth's polar radius to light year
Please provide values below to convert Earth's polar radius [R_p] to light year [ly], or Convert light year to Earth's polar radius.
How to Convert Earth's Polar Radius to Light Year
1 R_p = 6.71909248278846e-10 ly
Example: convert 15 R_p to ly:
15 R_p = 15 × 6.71909248278846e-10 ly = 1.00786387241827e-08 ly
Earth's Polar Radius to Light Year Conversion Table
| Earth's polar radius | light year |
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Earth's Polar Radius
The Earth's polar radius is the distance from the center of the Earth to the North or South Pole, approximately 6,356.8 kilometers.
History/Origin
The fact that the Earth is an oblate spheroid, flattened at the poles, has been known since the 18th century. Modern measurements are made with high precision.
Current Use
The Earth's polar radius is a key parameter in geodesy and is used to define the Earth's shape and gravitational field.
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.