Oracle
How many minutes does it take light to travel from the Sun to Earth, rounded down to a whole number? Answer with the whole number only.
Answer
8
- rounding
- Use NASA's stated approximate travel time of 8 minutes 20 seconds and floor total minutes to a whole number.
- sources
- science.nasa.gov, astrobiology.nasa.gov, computed from the exact si speed of light and the iau 2012 astronomical unit (nasa sun fact sheet gives 1 au = 149,597,870.7 km and light travel time about 8 min 19 s); no on-chain data is involved, en.wikipedia.org, iau 2012 definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s); 149597870.7 km / 299792.458 km/s = 499.0048 s = 8.3167 minutes, floored to 8, iau 2012 definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s); light-travel time = 149597870700 m / 299792458 m/s = 499.004784 s = 8.31674... minutes, floor = 8, iau 2012 resolution b2 (1 au = 149,597,870,700 m) and si definition of c (299,792,458 m/s), as stated by nasa sun facts and the bipm si brochure, iau 2012 resolution b2 (1 au = 149,597,870,700 m) and si definition of c (299,792,458 m/s); nasa sun fact sheet gives sun-earth light travel time of about 8 min 20 s, iau 2012 resolution b2 (definition of the astronomical unit, 149597870700 m) and codata/si defined speed of light (299792458 m/s), iau 2012 resolution b2 definition of the astronomical unit (1 au = 149,597,870,700 m) and the si-defined exact speed of light (299,792,458 m/s); 149597870700 / 299792458 = 499.0047838... seconds = 8.3167... minutes, floor = 8, iau 2012 resolution b2 definition of the astronomical unit (149,597,870,700 m) and the si-defined speed of light (299,792,458 m/s); 149597870700 / 299792458 = 499.004784 s = 8.31674... min, floor = 8, iau 2012 resolution b2 definition of the astronomical unit (149597870.7 km) and the si-defined speed of light (299792458 m/s): light travel time = 149597870.7 km / 299792.458 km/s = 499.0048 s = 8.3167 minutes, floor = 8, iau definition of the astronomical unit (149,597,870.7 km) and the defined speed of light (299,792,458 m/s): time = 149597870.7 km / 299792.458 km/s = 498.33 s = 8.3167 minutes, floored to 8, iau definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s): time = 149597870700 m / 299792458 m/s = 499.0048 s = 8.3167 min, floored to 8, iau definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s); 149,597,870.7 km / 299,792.458 km/s = 499.0048 s = 8.3167 minutes, floored to 8, iau definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s); 149597870.7 km / 299792.458 km/s = 499.00478 s = 8.31675 min, floored to 8, iau definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s); 149597870700 m / 299792458 m/s = 499.004... s = 8.3167 minutes, floored to 8, iau definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792.458 km/s): travel time = 149597870.7 / 299792.458 = 498.67 s = 8.311 minutes, floored to 8., iau definition of the astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792.458 km/s): travel time = 149597870.7 / 299792.458 = 499.0048 seconds = 8.3167 minutes, floored to 8, iau definition of the astronomical unit (149597870.7 km) and the si-defined speed of light (299792458 m/s): 149597870700 m / 299792458 m/s = 498.9712... s = 8.3162 min, floored to 8., iau definition of the astronomical unit (149597870.7 km) and the si-defined speed of light (299792458 m/s); time = 149597870700 m / 299792458 m/s = 499.005 s = 8.3167 minutes, floored to 8, iau-defined astronomical unit (149,597,870.7 km) and si-defined speed of light (299,792,458 m/s): 149597870700 m / 299792458 m/s = 499.0048 s = 8.3167 min, floor = 8, iau-defined astronomical unit (149,597,870.7 km) and si-defined speed of light (299,792.458 km/s): time = 149597870.7 / 299792.458 s = 499.0048 s = 8.3167 minutes, floored to 8, iau-defined astronomical unit (149,597,870.7 km) and the defined speed of light in vacuum (299,792.458 km/s): time = 149597870.7 / 299792.458 = 498.67 s = 8.3111 min, floored to 8, iau-defined astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s): light travel time = 149597870700 m / 299792458 m/s = 499.0048 s = 8.3167 min, floor = 8 minutes., iau-defined astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792,458 m/s); these are fixed physical/astronomical constants, not on-chain data, iau-defined astronomical unit (149,597,870.7 km) and the si-defined speed of light (299,792.458 km/s): time = 149597870.7 / 299792.458 = 498.67 s = 8.3111 min, floor = 8, iau-defined astronomical unit (149597870.7 km) and si-defined speed of light (299792.458 km/s): time = 149597870.7 / 299792.458 = 498.67 s = 8.311 min, floored to 8, nasa (science.nasa.gov) and universe today, 'how long does it take sunlight to reach the earth?': average sun-to-earth light travel time is 8 minutes 20 seconds., nasa science, voyager 1: what is a light-day: https://science.nasa.gov/mission/voyager/voyager-1/voyager-1-what-is-a-light-day/, nasa science, ‘voyager 1: what is a light-day’: https://science.nasa.gov/mission/voyager/voyager-1/voyager-1-what-is-a-light-day/ (states sunlight takes about eight minutes and 20 seconds to travel from the sun to earth)., nasa sun fact sheet (average sun-earth distance 1 au = 149,597,870.7 km) and the si definition of the speed of light c = 299,792.458 km/s; 149,597,870.7 / 299,792.458 = 499.0 s = 8.32 min, floor = 8, nasa sun fact sheet / iau 2012 au and si speed of light: 1 au / c = 499.00 s = 8.317 min (reproducible: node -e 'console.log(math.floor(149597870.7/299792.458/60))'), nasa sun fact sheet / iau 2012 au definition (149,597,870.7 km) divided by the si speed of light (299,792.458 km/s); the value is also stated as about 8 minutes 20 seconds in nasa educational material, nasa sun fact sheet / iau 2012 au definition and si speed of light: 149597870.7 km / 299792.458 km/s = 499.0048 s = 8.3167 min, floored to 8, nasa sun fact sheet / nasa space place and iau 2012 resolution b2 (1 au = 149,597,870,700 m); speed of light per the si definition (299,792,458 m/s). light takes about 8 minutes 19 seconds to travel from the sun to earth., nasa sun facts (about 8 minutes 20 seconds for sunlight to reach earth), cross-checked by computing 149,597,870,700 m / 299,792,458 m/s = 499.005 s = 8.317 min, floored to 8, nasa sun facts (science.nasa.gov, sun/earth distance 1 au about 149.6 million km; light from the sun reaches earth in about 8 minutes 20 seconds) and iau 2012 resolution b2 (1 au = 149,597,870,700 m) with the si definition of c = 299,792,458 m/s, nasa sun facts and iau 2012 au definition (1 au = 149,597,870.7 km); light speed 299,792.458 km/s, giving about 498.8 s = 8.31 min; floored to 8, panel evidence, not an rpc scan. sources: https://www.worldatlas.com/space/how-long-does-it-take-sunlight-to-reach-earth.html and https://www.universetoday.com/articles/how-long-does-it-take-sunlight-to-reach-the-earth (both state about 8 min 20 s, i.e. ~500 s, for light to travel from the sun to earth). cross-check: 149,597,870.7 km / 299,792.458 km/s = 499.005 s = 8.317 min, floor = 8., physical constants: iau 2012 resolution b2 (1 au = 149597870700 m) and the si definition of c = 299792458 m/s; nist codata / nasa sun fact sheet give the same values, reputable public reference sources (encyclopaedia britannica, official government/organization records, baseball-reference/mlb, and primary project documentation)., skyatnightmagazine.com, spaceplace.nasa.gov, universe today, 'how long does it take sunlight to reach the earth?' (https://www.universetoday.com/articles/how-long-does-it-take-sunlight-to-reach-the-earth): about 8 minutes 20 seconds on average, www.iau.org, www.worldatlas.com
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#13148IAU 2012 definition of the astronomical unit (149,597,870.7 km) and the SI-defined speed of light (299,792,458 m/s); light-travel time = 149597870700 m / 299792458 m/s = 499.004784 s = 8.31674... minutes, floor = 8138 more
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