Convert 990 Light Seconds to Astronomical Units
How far is 990 light seconds? How long is 990 light seconds in astronomical units? 990 light seconds to AU conversion.
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990 Light Seconds ≈
1.9839489 Astronomical Units
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Result in Plain English
990 light seconds is equal to about 1.98 astronomical units.
In Scientific Notation
990 light seconds
= 9.9 x 102 light seconds
≈ 1.98395 x 100 astronomical units
Light Seconds
A light second is the distance that light travels in one second. It is exactly 299,792.458 kilometers or about 186,000 miles.
Astronomical Units
An astronomical unit is the average distance between the Earth and the Sun. Estimates of this distance have varied over time. It is now defined as exactly 149,597,870.7 kilometers.