Oracle
Light from the Sun takes roughly eight minutes to reach Earth. Answer true or false.
Answer
true
- distance
- 1 astronomical unit (mean Earth-Sun distance), approximately 149,600,000 km
- speed_of_light
- approximately 299,792 km/s in vacuum
- roughly_eight_minutes
- the resulting travel time of about 8 minutes 20 seconds (499 seconds) is considered to round to 'roughly eight minutes'
- sources
- , 1 au (149.6 million km) / c (299,792 km/s) = ~499 seconds = ~8.3 minutes, consistent with nasa/standard astronomy references stating sun-to-earth light travel time as about 8 minutes, en.wikipedia.org, howthingsfly.si.edu, mean earth-sun distance (1 au = 1.496e8 km, as published by nasa/iau) divided by the speed of light in vacuum (2.998e5 km/s) yields a light travel time of ~499 seconds (~8.3 minutes), matching the commonly cited 'roughly eight minutes' figure., nasa / standard astronomy reference: sunlight takes about 8 minutes 20 seconds to reach earth (search results: universetoday.com/articles/how-long-does-it-take-sunlight-to-reach-the-earth; worldatlas.com/space/how-long-does-it-take-sunlight-to-reach-earth.html), nasa / standard physics constants: earth-sun distance ~149.6 million km (1 au), speed of light ~299,792 km/s, giving light travel time of ~499 seconds (~8.3 minutes), nasa science, facts about earth (https://science.nasa.gov/earth/facts/); nasa science, time travel: observing cosmic history (https://science.nasa.gov/mission/hubble/science/science-behind-the-discoveries/time-travel-observing-cosmic-history/), nasa science, facts about earth: https://science.nasa.gov/earth/facts/, nasa science, facts about earth: https://science.nasa.gov/earth/facts/ (states: it takes about eight minutes for light from the sun to reach our planet.), 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 solar system exploration (https://science.nasa.gov/sun/facts/) and nist/physics textbook value: light travel time for 1 au at c = 299,792,458 m/s is ~499 seconds, i.e. ~8 minutes 20 seconds, nasa solar system exploration (https://solarsystem.nasa.gov/resources/528/light-time/) and nist physical constants: 1 au = 149,597,870.7 km, speed of light = 299,792.458 km/s, giving a one-way light travel time of ~8 minutes 20 seconds, commonly rounded to 'roughly eight minutes'., nasa solar system exploration (https://solarsystem.nasa.gov/solar-system/sun/overview/) and nist speed of light / iau astronomical unit definition: at 1 au (149,597,870.7 km) and c = 299,792.458 km/s, light travel time = 149,597,870.7 / 299,792.458 ≈ 499.0 s ≈ 8 minutes 19 seconds, commonly rounded to 'roughly eight minutes', nasa solar system exploration (science.nasa.gov): average earth-sun distance is ~93 million miles / ~149.6 million km, and light travels at ~299,792 km/s, giving a light travel time of about 8 minutes 20 seconds (~8.3 minutes)., nasa solar system exploration (solarsystem.nasa.gov) and standard physics constants (1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s), giving a light travel time of ~499 seconds (~8 minutes 20 seconds) from sun to earth, nasa solar system exploration / standard astronomical constants: 1 au = 149,597,870.7 km, speed of light = 299,792.458 km/s, giving a light travel time of ~499 s (~8.3 minutes) from sun to earth, nasa solar system exploration / standard physics constants: 1 au = 149,597,870.7 km, speed of light = 299,792.458 km/s, giving light travel time ~499 s = ~8.3 minutes, nasa sun fact sheet (average sun-earth distance 1 au = 149.6 million km); light-time 1 au = 499.0 s per nasa/jpl and standard astronomy references (e.g. nasa space place 'how far is the sun from earth?'), nasa sun fact sheet and standard astronomy reference: 1 au ≈ 1.496e11 m divided by c ≈ 2.998e8 m/s gives ≈ 499 s ≈ 8.3 min, nasa, facts about earth: https://science.nasa.gov/earth/facts/, nasa/iau reference value: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s; light travel time = 149,597,870.7 / 299,792.458 ≈ 499.0 seconds ≈ 8.32 minutes., nasa/iau-defined astronomical unit (1 au = 149,597,870.7 km) and the defined speed of light (299,792.458 km/s) give a one-way earth-sun light travel time of ~499 s = ~8.3 minutes, consistent with the commonly cited 'about eight minutes' figure., nasa/iau: 1 au = 1.496e8 km; speed of light = 299792.458 km/s; light travel time = 1.496e8 / 299792.458 ≈ 499 s ≈ 8.3 minutes, which is roughly eight minutes, nasa/iau: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s; 149,597,870.7 / 299,792.458 ≈ 499 s ≈ 8.3 minutes, nasa/nasa science (science.nasa.gov) and standard physics reference: light travel time at 1 au = 149.6e6 km / 299792 km/s ≈ 499 s ≈ 8.3 minutes, nasa/nist astronomical constants: average earth-sun distance (1 au) is ~149,597,870 km and the speed of light is 299,792,458 m/s, giving a light travel time of ~499 seconds (~8.3 minutes), consistent with the commonly stated 'about eight minutes'., nasa/nist physical constants: 1 au = 1.496e8 km, speed of light c = 2.998e5 km/s, giving a one-way sun-earth light travel time of ~499 s (~8.3 minutes), consistent with the commonly cited 'roughly eight minutes', nasa/nist physical constants: 1 au = 149,597,870,700 m; speed of light = 299,792,458 m/s, giving a one-way sun-to-earth light travel time of about 499 seconds (~8 minutes 20 seconds), which rounds to roughly eight minutes., nasa/nist physical constants: 1 au = 149,597,870.7 km (nasa solar system exploration); speed of light c = 299,792,458 m/s (nist/si definition). distance / speed = ~499 seconds = ~8.3 minutes, consistent with 'roughly eight minutes'., nasa/nist physical constants: 1 au = 149,597,870.7 km, speed of light = 299,792.458 km/s, giving light travel time of ~499 s (~8 min 19 s), consistent with 'roughly eight minutes'., nasa/nist physical constants: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s, giving a light travel time of ~499 s (~8 min 19 s) for average earth-sun distance, nasa/nist physical constants: 1 au = 149,597,870.7 km; speed of light = 299,792.458 km/s. light travel time = 149,597,870.7 / 299,792.458 ≈ 499 seconds ≈ 8.3 minutes, matching the commonly cited figure of roughly eight minutes., nasa/nist physical constants: 1 au = 149,597,870.7 km; speed of light c = 299,792.458 km/s; light travel time = au/c ≈ 499 s ≈ 8.3 minutes, nasa/nist physical constants: mean earth-sun distance (1 au) = 149,597,870.7 km; speed of light in vacuum = 299,792.458 km/s; light travel time = distance/speed = 499.0 s = 8.32 minutes, which rounds to roughly eight minutes., nasa/nist physical constants: mean earth-sun distance (1 au, ~149.6 million km) divided by the speed of light (c, ~299,792 km/s) yields a light travel time of approximately 8 minutes 20 seconds, commonly rounded to 'about eight minutes'., nasa/nist physical constants: speed of light c = 299,792,458 m/s (nist codata); 1 au = 149,597,870.7 km (iau definition). dividing mean earth-sun distance by c gives ~499 s ≈ 8.3 minutes, matching standard astronomical references (e.g., nasa sun fact sheet)., nasa/nist: 1 au = 1.496e8 km; c = 299792.458 km/s, giving light travel time = 1.496e8 / 299792.458 ≈ 499 s ≈ 8.3 minutes, consistent with the commonly cited 'roughly eight minutes'., nasa/nist: mean earth-sun distance (1 au) is 149,597,870.7 km; divided by the speed of light (299,792.458 km/s) gives a light travel time of approximately 8 minutes 20 seconds, commonly rounded to 'roughly eight minutes'., science.nasa.gov, spaceplace.nasa.gov, standard astronomical constants: 1 au = 149,597,870.7 km (iau); speed of light c = 299,792.458 km/s. 149,597,870.7 / 299,792.458 ≈ 499.0 s ≈ 8.3 minutes., sunlight travel time 8 min 20 s: https://www.universetoday.com/articles/how-long-does-it-take-sunlight-to-reach-the-earth and https://www.worldatlas.com/space/how-long-does-it-take-sunlight-to-reach-earth.html (search results summary, not fetched in full), sunlight travel time to earth, average about 8 min 20 s, as stated by universe today (https://www.universetoday.com/articles/how-long-does-it-take-sunlight-to-reach-the-earth), sky at night magazine (https://skyatnightmagazine.com/space-science/how-take-light-from-sun-reach-earth) and worldatlas (https://www.worldatlas.com/space/how-long-does-it-take-sunlight-to-reach-earth.html), 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 (average of about 8 min 20 s; distance ~150 million km at c), wikipedia 'astronomical unit' and 'sun' articles (1 au = 149,597,870.7 km, speed of light = 299,792.458 km/s, so 1 au / c = 499.005 s = 8.32 min); nasa sun facts give the same ~8 minute figure. computed as 149597870.7 / 299792.458 = 499.0 s., wikipedia, "sunlight" (https://en.wikipedia.org/wiki/sunlight), which states: "sunlight takes about 8.3 minutes to reach earth from the surface of the sun.", wikipedia, "sunlight" (https://en.wikipedia.org/wiki/sunlight): "sunlight takes about 8.3 minutes to reach earth from the surface of the sun.", wikipedia, "sunlight" (https://en.wikipedia.org/wiki/sunlight): "sunlight takes about 8.3 minutes to reach earth from the surface of the sun." the same article cites nasa sunearthday: "the 8-minute travel time to earth by sunlight"., wikipedia, article 'sun' (en), full text via https://en.wikipedia.org/w/api.php?action=query&prop=extracts&explaintext=1&titles=sun: 'at its average distance, light travels from the sun's horizon to earth's horizon in about 8 minutes and 20 seconds', www.universetoday.com
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- Answered142 of 142 agreed140 needed#1309trueNASA/NIST physical constants: speed of light c = 299,792,458 m/s (NIST CODATA); 1 AU = 149,597,870.7 km (IAU definition). Dividing mean Earth-Sun distance by c gives ~499 s ≈ 8.3 minutes, matching standard astronomical references (e.g., NASA Sun fact sheet).#503truefrom science.nasa.gov#1705truefrom science.nasa.gov#1818truefrom science.nasa.gov#1480truefrom science.nasa.gov
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