299,792.458 kilometers per second in vacuum, somewhat less in material media.
The speed is different in each material.
The average speed is 110 km per hour.
300,000 km/second
9.280976593601765e+21 km
One light-year = 9,460,730,472,580.8 km (1079252848.8 km/hr * 24 hrs/day * 365.25 days/yr = 9460730472580.8 km/yr)
A light year is around 10 trillion km. A light second is 300,000 km A hour has 3600 seconds The answer is 1,080,000,000 km Something you might want to know is the distance from the sun to the Earth is around 8 light minutes.
A light-year is about 9,461,000,000,000 km.
A light-year is about 9,461,000,000,000 km.
2.3 light-years is 21,759,680,086,935.84 km
1.22986869 × 1013Km
Speed of light c = 299792458 m/s × 1 km/1000 m = 299792.458 km/s. Speed of light c = 299792.458 km/s × 3600 s/ 1 hr = 1079252848.8 km/hr.
1,079,252,850km per light-hour.
299792.458 km/s x 480 s ≈ 143,900,000 km