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Astronomical unit (AU) to Kilometer (km) Online Unit Converter Tool

Result: 

Astronomical unit (AU):

Definition: The astronomical unit, abbreviated as “AU,” is a unit of length used in astronomy to measure distances within the solar system. It represents the average distance from the Earth to the Sun.

History/Origin: The concept of the astronomical unit dates back to ancient times when astronomers observed the motion of celestial bodies. It was formally defined in the 17th century and refined over time.

Current Uses: Astronomical units are essential for describing planetary orbits, asteroid distances, and comet trajectories within the solar system. They provide a convenient scale for measuring celestial distances.

Where to Use: Astronomical units are employed in planetary science, space exploration, and astronomical research. They serve as a fundamental unit for understanding the layout and dynamics of the solar system.

Kilometer (km):

Definition: The kilometer, abbreviated as “km,” is a unit of length equal to 1000 meters. It is commonly used to measure longer distances such as between cities or geographical locations.

History/Origin: The term “kilometer” is derived from the Greek words “khilioi,” meaning “thousand,” and “metron,” meaning “measure.” The concept of dividing distances into thousand-meter segments has ancient origins.

Current Uses: Kilometers are extensively used in transportation, geographical mapping, sports, and daily life. They provide a convenient way to express large distances in a manageable scale.

Where to Use: Kilometers find application in road signs, maps, GPS navigation systems, athletic tracks, and international travel distances.

Astronomical unit (AU) to Kilometer (km) Conversion Table:

Astronomical Unit (AU)

Kilometer (km)

1

1.496 × 10⁸

2

2.992 × 10⁸

3

4.488 × 10⁸

4

5.984 × 10⁸

5

7.480 × 10⁸

6

8.976 × 10⁸

7

1.047 × 10⁹

8

1.197 × 10⁹

9

1.346 × 10⁹

10

1.496 × 10⁹