Oracle
On average, about how many minutes does sunlight take to reach Earth? Answer with the whole number of minutes, rounded down. Answer with the whole number only.
Answer
8
- speed
- speed of light in vacuum, 299792.458 km/s
- distance
- 1 astronomical unit (mean Earth-Sun distance), 149597870.7 km
- rounding
- floor of the computed minutes
- sources
- , 1 au (149,600,000 km) divided by the speed of light (299,792.458 km/s) is about 499.0 seconds, i.e. about 8.3 minutes, which rounds down to 8; standard astronomical constants (nasa/iau) give the average earth-sun light travel time as roughly 8 minutes 20 seconds., 1 au / speed of light = 149597870.7 km / 299792.458 km/s = 499.0 s = 8.317 minutes, floored to 8, 1 au = 149,597,870 km; speed of light = 299,792.458 km/s; time = 149,597,870 / 299,792.458 = 499.0 s = 8.317 min, floored to 8 minutes (standard astronomical constants, e.g. nasa/nist published values), 1 au = 149,597,870.7 km (iau definition); speed of light = 299,792.458 km/s; light travel time = 149,597,870.7 / 299,792.458 = ~499.0 s = ~8.317 min, floored to 8, astrobiology.nasa.gov, en.wikipedia.org, iau astronomical unit definition (1 au = 149,597,870.7 km) and defined speed of light (299,792.458 km/s): 149,597,870.7 / 299,792.458 = 499.005 s = 8.3167 min, floored to 8, iau definition of the astronomical unit (149,597,870.7 km) and codata speed of light (299,792,458 m/s): light travel time = 149,597,870,700 m / 299,792,458 m/s = 499.0048 s = 8.3167 minutes, rounded down to 8 minutes., iau definition of the astronomical unit (149,597,870.7 km) and the defined speed of light (299,792.458 km/s): light travel time = distance / speed = 499.0 s = 8.317 minutes, floored to 8, iau-defined astronomical unit (149,597,870.7 km) and codata speed of light (299,792,458 m/s), a standard, widely-cited pair of physical constants, iau-defined astronomical unit (149,597,870.7 km) divided by the speed of light (299,792.458 km/s) = ~499.005 s = ~8.317 min, rounded down to 8, nasa / nist-defined physical constants: 1 au = 149,597,870.7 km (iau 2012 definition); speed of light c = 299,792,458 m/s (si defined exact value), nasa science, voyager 1: what is a light-day (https://science.nasa.gov/mission/voyager/voyager-1/voyager-1-what-is-a-light-day/): sunlight takes about eight minutes and 20 seconds to travel from the sun to earth., nasa solar system exploration / iau: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s, giving a light travel time of ~499 seconds (~8.3 minutes) from sun to earth, nasa space place (spaceplace.nasa.gov/light-year/en/): sunlight takes about 8.3 minutes to reach earth, nasa/iau astronomical constants: 1 au = 149,597,870 km; speed of light = 299,792.458 km/s, giving light travel time of about 499 seconds (~8.3 minutes), rounded down to 8 minutes., nasa/iau-defined astronomical unit (149,597,870.7 km) divided by the speed of light (299,792.458 km/s) gives ~499 seconds, i.e. ~8.317 minutes, nasa/iau-standard astronomical constants: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s, giving light travel time = 149597870.7 / 299792.458 ≈ 499.0 s ≈ 8.32 minutes, floored to 8, nasa/iau-standard astronomical unit value (1 au = 149,600,000 km) and defined speed of light (299,792.458 km/s): 149,600,000 / 299,792.458 = 499.0 s = 8.317 min, floored to 8, nasa/iau: 1 au = 149,597,870 km; c = 299,792.458 km/s -> travel time = 149597870 / 299792.458 = 499.0048 s = 8.3167 min, floored to 8, nasa/iau: 1 au = 149,597,870 km; speed of light = 299,792.458 km/s, giving a light travel time of about 499 seconds (~8.3 minutes), floored to 8 minutes., nasa/iau: 1 au = 149,597,870 km; speed of light = 299,792.458 km/s, giving light travel time of ~499.0 seconds (~8.317 minutes), rounded down to 8 minutes., nasa/iau: 1 au = 149,597,870 km; speed of light = 299,792.458 km/s; travel time = 149,597,870 / 299,792.458 = 498.67 s = 8.31 min, rounded down to 8, nasa/iau: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s -> light travel time = 499.0 s = 8.317 min, rounded down to 8, nasa/iau: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s, yielding light travel time ~499.0 seconds ~= 8.3 minutes, floored to 8 minutes, nasa/iau: mean earth-sun distance of 1 au = 149,600,000 km, combined with the defined speed of light 299,792.458 km/s, giving light travel time of ~499.0 seconds (~8.317 minutes), nasa/nist physical constants: mean earth-sun distance = 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s. travel time = 149597870.7 / 299792.458 = 499.0 seconds = 8.317 minutes, rounded down = 8., nasa/nist-defined constants: 1 au = 149,597,870 km (mean earth-sun distance); speed of light = 299,792.458 km/s. 149,597,870 / 299,792.458 = 499.0 s = 8.317 minutes, rounded down to 8., nasa/nist-derived astronomical constants: 1 au = 149,597,870 km; speed of light = 299,792.458 km/s. time = 149,597,870 / 299,792.458 = 499.0 s = 8.317 min, rounded down to 8., nasa/nist-standard constants: 1 au = 149,597,870.7 km (iau definition); speed of light = 299,792,458 m/s. travel time = 149,597,870,700 m / 299,792,458 m/s = 499.0 s = 8.316 minutes, rounded down to 8., nist/iau defined constants: 1 au = 149,597,870,700 m (iau 2012 definition); speed of light = 299,792,458 m/s (si definition). light travel time = 149597870700 / 299792458 = 499.0047838... seconds = 8.3167... minutes, rounded down to 8., science.nasa.gov, spaceplace.nasa.gov
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#4298IAU definition of the astronomical unit (149,597,870.7 km) and the defined speed of light (299,792.458 km/s): light travel time = distance / speed = 499.0 s = 8.317 minutes, floored to 8
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