<Table> List of orders of magnitude for length <Tr> <Th> Scale ( ly ) </Th> <Th> Value </Th> <Th> Item </Th> </Tr> <Tr> <Td> 10 </Td> <Td> 7008382213511092264 ♠ 40.4 × 10 ly </Td> <Td> Reflected sunlight from the Moon 's surface takes 1.2 -- 1.3 seconds to travel the distance to the Earth 's surface ( travelling roughly 7005350000000000000 ♠ 350 000 to 7005400000000000000 ♠ 400 000 kilometres ) . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7011149479541466776 ♠ 15.8 × 10 ly </Td> <Td> One astronomical unit ( the distance from the Sun to the Earth ) . It takes approximately 499 seconds ( 8.32 minutes ) for light to travel this distance . </Td> </Tr> <Tr> <Td> 7012120151277001776 ♠ 127 × 10 ly </Td> <Td> The Huygens probe lands on Titan off Saturn and transmits images from its surface , 1.2 billion kilometres from Earth . </Td> </Tr> <Tr> <Td> 7012476820815818072 ♠ 504 × 10 ly </Td> <Td> New Horizons encounters Pluto at a distance 4.7 billion kilometres , and the communication takes 4 hours 25 minutes to reach Earth . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7013192998901640648 ♠ 2.04 × 10 ly </Td> <Td> The most distant space probe , Voyager 1 , was about 18 light - hours away from the Earth as of October 2014 . It will take about 7004175000000000000 ♠ 17 500 years to reach one light - year ( 7015946073047258080 ♠ 1.0 × 10 ly ) at its current speed of about 17 km / s ( 7004169875200000000 ♠ 38 000 mph ) relative to the Sun . On September 12 , 2013 , NASA scientists announced that Voyager 1 had entered the interstellar medium of space on August 25 , 2012 , becoming the first manmade object to leave the Solar System . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7016151371687561292 ♠ 1.6 × 10 ly </Td> <Td> The Oort cloud is approximately two light - years in diameter . Its inner boundary is speculated to be at 7015747989353500000 ♠ 50 000 au , with its outer edge at 7016149597870700000 ♠ 100 000 au . </Td> </Tr> <Tr> <Td> 7016189214609451616 ♠ 2.0 × 10 ly </Td> <Td> Maximum extent of the Sun 's gravitational dominance ( Hill sphere / Roche sphere , 7016186997338375000 ♠ 125 000 au ) . Beyond this is the deep ex-solar gravitational interstellar medium . </Td> </Tr> <Tr> <Td> 7016399242825942909 ♠ 4.22 × 10 ly </Td> <Td> The nearest known star ( other than the Sun ) , Proxima Centauri , is about 4.22 light - years away . </Td> </Tr> <Tr> <Td> 7016813622820641948 ♠ 8.60 × 10 ly </Td> <Td> Sirius , the brightest star of the night sky . Twice as massive and 25 times more luminous than the Sun , it outshines more luminous stars due to its relative proximity . </Td> </Tr> <Tr> <Td> 7017112582692623711 ♠ 11.90 × 10 ly </Td> <Td> HD 10700 e , an extrasolar candidate for a habitable planet . 6.6 times as massive as the earth , it is in the middle of the habitable zone of star Tau Ceti . </Td> </Tr> <Tr> <Td> 7017193944974687906 ♠ 20.5 × 10 ly </Td> <Td> Gliese 581 , a red - dwarf star with several detectable exoplanets . </Td> </Tr> <Tr> <Td> 7018293282644650004 ♠ 310 × 10 ly </Td> <Td> Canopus , second in brightness in the terrestrial sky only to Sirius , a type A9 bright giant 7004107000000000000 ♠ 10 700 times more luminous than the Sun . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7019283821914177424 ♠ 3 × 10 ly </Td> <Td> A0620 - 00 , the nearest known black hole , is about 7003300000000000000 ♠ 3000 light - years away . </Td> </Tr> <Tr> <Td> 7020245978992287100 ♠ 26 × 10 ly </Td> <Td> The centre of the Milky Way is about 7004260000000000000 ♠ 26 000 light - years away . </Td> </Tr> <Tr> <Td> 7020946073047258079 ♠ 100 × 10 ly </Td> <Td> The Milky Way is about 7005100000000000000 ♠ 100 000 light - years across . </Td> </Tr> <Tr> <Td> 7021156102052797583 ♠ 165 × 10 ly </Td> <Td> R136a1 , in the Large Magellanic Cloud , the most luminous star known at 8.7 million times the luminosity of the Sun , has an apparent magnitude 12.77 , just brighter than 3C 273 . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7022236518261814520 ♠ 2.5 × 10 ly </Td> <Td> The Andromeda Galaxy is approximately 2.5 million light - years away . </Td> </Tr> <Tr> <Td> 7022283821914177424 ♠ 3 × 10 ly </Td> <Td> The Triangulum Galaxy ( M33 ) , at about 3 million light - years away , is the most distant object visible to the naked eye . </Td> </Tr> <Tr> <Td> 7023558183097882267 ♠
<Table> List of orders of magnitude for length <Tr> <Th> Scale ( ly ) </Th> <Th> Value </Th> <Th> Item </Th> </Tr> <Tr> <Td> 10 </Td> <Td> 7008382213511092264 ♠ 40.4 × 10 ly </Td> <Td> Reflected sunlight from the Moon 's surface takes 1.2 -- 1.3 seconds to travel the distance to the Earth 's surface ( travelling roughly 7005350000000000000 ♠ 350 000 to 7005400000000000000 ♠ 400 000 kilometres ) . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7011149479541466776 ♠ 15.8 × 10 ly </Td> <Td> One astronomical unit ( the distance from the Sun to the Earth ) . It takes approximately 499 seconds ( 8.32 minutes ) for light to travel this distance . </Td> </Tr> <Tr> <Td> 7012120151277001776 ♠ 127 × 10 ly </Td> <Td> The Huygens probe lands on Titan off Saturn and transmits images from its surface , 1.2 billion kilometres from Earth . </Td> </Tr> <Tr> <Td> 7012476820815818072 ♠ 504 × 10 ly </Td> <Td> New Horizons encounters Pluto at a distance 4.7 billion kilometres , and the communication takes 4 hours 25 minutes to reach Earth . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7013192998901640648 ♠ 2.04 × 10 ly </Td> <Td> The most distant space probe , Voyager 1 , was about 18 light - hours away from the Earth as of October 2014 . It will take about 7004175000000000000 ♠ 17 500 years to reach one light - year ( 7015946073047258080 ♠ 1.0 × 10 ly ) at its current speed of about 17 km / s ( 7004169875200000000 ♠ 38 000 mph ) relative to the Sun . On September 12 , 2013 , NASA scientists announced that Voyager 1 had entered the interstellar medium of space on August 25 , 2012 , becoming the first manmade object to leave the Solar System . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7016151371687561292 ♠ 1.6 × 10 ly </Td> <Td> The Oort cloud is approximately two light - years in diameter . Its inner boundary is speculated to be at 7015747989353500000 ♠ 50 000 au , with its outer edge at 7016149597870700000 ♠ 100 000 au . </Td> </Tr> <Tr> <Td> 7016189214609451616 ♠ 2.0 × 10 ly </Td> <Td> Maximum extent of the Sun 's gravitational dominance ( Hill sphere / Roche sphere , 7016186997338375000 ♠ 125 000 au ) . Beyond this is the deep ex-solar gravitational interstellar medium . </Td> </Tr> <Tr> <Td> 7016399242825942909 ♠ 4.22 × 10 ly </Td> <Td> The nearest known star ( other than the Sun ) , Proxima Centauri , is about 4.22 light - years away . </Td> </Tr> <Tr> <Td> 7016813622820641948 ♠ 8.60 × 10 ly </Td> <Td> Sirius , the brightest star of the night sky . Twice as massive and 25 times more luminous than the Sun , it outshines more luminous stars due to its relative proximity . </Td> </Tr> <Tr> <Td> 7017112582692623711 ♠ 11.90 × 10 ly </Td> <Td> HD 10700 e , an extrasolar candidate for a habitable planet . 6.6 times as massive as the earth , it is in the middle of the habitable zone of star Tau Ceti . </Td> </Tr> <Tr> <Td> 7017193944974687906 ♠ 20.5 × 10 ly </Td> <Td> Gliese 581 , a red - dwarf star with several detectable exoplanets . </Td> </Tr> <Tr> <Td> 7018293282644650004 ♠ 310 × 10 ly </Td> <Td> Canopus , second in brightness in the terrestrial sky only to Sirius , a type A9 bright giant 7004107000000000000 ♠ 10 700 times more luminous than the Sun . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7019283821914177424 ♠ 3 × 10 ly </Td> <Td> A0620 - 00 , the nearest known black hole , is about 7003300000000000000 ♠ 3000 light - years away . </Td> </Tr> <Tr> <Td> 7020245978992287100 ♠ 26 × 10 ly </Td> <Td> The centre of the Milky Way is about 7004260000000000000 ♠ 26 000 light - years away . </Td> </Tr> <Tr> <Td> 7020946073047258079 ♠ 100 × 10 ly </Td> <Td> The Milky Way is about 7005100000000000000 ♠ 100 000 light - years across . </Td> </Tr> <Tr> <Td> 7021156102052797583 ♠ 165 × 10 ly </Td> <Td> R136a1 , in the Large Magellanic Cloud , the most luminous star known at 8.7 million times the luminosity of the Sun , has an apparent magnitude 12.77 , just brighter than 3C 273 . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7022236518261814520 ♠ 2.5 × 10 ly </Td> <Td> The Andromeda Galaxy is approximately 2.5 million light - years away . </Td> </Tr> <Tr> <Td> 7022283821914177424 ♠ 3 × 10 ly </Td> <Td> The Triangulum Galaxy ( M33 ) , at about 3 million light - years away , is the most distant object visible to the naked eye . </Td> </Tr> <Tr> <Td> 7023558183097882267 ♠
how many lightyears is the sun from earth
how many lightyears is the sun from earth
15.8 × 10 ly
15.8 × 10 ly