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A light-year (abbreviation: ly), sometimes referred to incorrectly as a light year, is a unit of length used informally to express astronomical distances. It is approxi ..more definition+
The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space ..more definition+
In relation to the base unit of [length] => (meters), 1 Light Years (ly) is equal to 9461000000000000 meters, while 1 Light Seconds (ls) = 299800000 meters.| 19800 Light Years | to common length units |
|---|---|
| 19800 ly | = 1.873278E+20 meters (m) |
| 19800 ly | = 1.873278E+17 kilometers (km) |
| 19800 ly | = 1.873278E+22 centimeters (cm) |
| 19800 ly | = 6.1459251968504E+20 feet (ft) |
| 19800 ly | = 7.3751102362205E+21 inches (in) |
| 19800 ly | = 2.0486417322835E+20 yards (yd) |
| 19800 ly | = 1.164000984252E+17 miles (mi) |
| 19800 ly | = 19800 light years (ly) |
| 19800 ly | = 7.0801067187536E+23 pixels (PX) |
| 19800 ly | = 1.17079875E+55 planck length (pl) |