1 light year equal to how many km?
singleAnswer singleAnswer
9.46 x 10^12 km 9.46 trillion kilometres
9.46 trillion kilometres
Light-year
1 light year equal to how many km 1 light year equal to how many km?
Light-year Parsec Light-second Astronomical unit Talk:Light-year/Archive 1 Speed of light Observable universe List of unusual units of measurement Warp drive Angular diameter
The <b>light</b>-<b>year</b> is a unit of length used to express astronomical distances and 
measures about 9.46 trillion <b>kilometres</b> (9.46 x 10<sup>12</sup> <b>km</b>) or 5.88 trillion miles (
5.88 x 10<sup>12</sup> mi). As defined by the International Astronomical Union (IAU), a <b>light</b>-
<b>year</b> is the <b>distance</b> that light travels in vacuum in <b>one</b> Julian year ... the 
astronomical unit, <b>equal</b> to the radius of the Earth&#39;s orbit (1.50×10<sup>8</sup> <b>km</b> or&nbsp;... <b>1</b> pc in ... ... is <b>equal</b> to ... metric (SI) units, 3.0857×10<sup>16</sup> m ~31 petametres &middot; 
imperial &amp; US units, 1.9174×10<sup>13</sup> mi &middot; astronomical units, 2.06265×10<sup>5</sup> au 3.261
56 ly. The parsec (symbol: pc) is a unit of length used to measure the large 
distances to astronomical ... <b>One</b> parsec is approximately <b>equal</b> to 31 trillion 
<b>kilometres</b> (3.1×10<sup>13</sup> <b>km</b>) or&nbsp;... The light-second is a unit of length useful in astronomy, telecommunications and 
relativistic physics. It is defined as the <b>distance</b> that light travels in free space in 
<b>one</b> second, and is <b>equal</b> to exactly ... The more commonly used <b>light</b>-<b>year</b> is also 
presently defined to be <b>equal</b> to precisely 31557600 light-seconds, since the&nbsp;... The astronomical unit is a unit of length, roughly the <b>distance</b> from Earth to the 
Sun and <b>equal</b> to ... The grey line indicates the Earth–Sun distance, which on 
average is about 1 astronomical unit. ... The <b>light</b>-<b>year</b> is often used in popular 
works, but is not an approved non-SI unit and is rarely used by professional 
astronomers. year <b>equals</b> 365.25 days. Article said <b>light year</b> was defined using the ... The 
International Astronomical Union defines a <b>light year</b> as the <b>distance</b> light travels 
in <b>one</b> Julian year (365.25 days exactly). The speed of light in vacuum, commonly denoted c, is a universal physical 
constant important ... In a medium, light usually does not propagate at a speed 
<b>equal</b> to c; further, different types of light wave ... A <b>light</b>-<b>year</b> is the <b>distance</b> light 
travels in <b>one</b> year, around 9461 billion <b>kilometres</b>, 5879 billion miles, or 0.3066 
parsecs. The observable universe is a spherical region of the universe comprising all 
matter that can be ... For example, the current <b>distance</b> to this horizon is about 16 
billion <b>light</b>-<b>years</b>, meaning that ... the inflation occurred was approximately <b>equal</b> 
to the speed of light times its age, that would ... It is about <b>1</b> billion <b>light</b>-<b>years</b> 
across. An unusual unit of measurement is a unit of measurement that does not form part 
of a coherent ... <b>One</b> rack unit (U) is 1.75 inches (44.45 mm) and is used to 
measure rack-mountable ... This <b>distance</b> is <b>equal</b> to about 15.8 <b>light</b>-<b>years</b>, 149.6 
Pm or 4.8 parsecs, and is about twice the <b>distance</b> from Earth to the star Sirius. A warp drive is a theoretical superluminal spacecraft propulsion system in <b>many</b> 
science fiction ... Achieving warp factor <b>1</b> is <b>equal</b> to breaking the light barrier, 
while the actual velocity ... The modified Voyager is able to cover a <b>distance</b> of 
300 <b>light years</b> with the slipstream modification before the system becomes 
unstable. The angular diameter, angular size, apparent diameter, or apparent size is an 
angular ... Angular radius <b>equals</b> half of the angular diameter. ... The angular 
diameter of the Sun, from a <b>distance</b> of <b>one light</b>-<b>year</b>, is 0.03″, and that of Earth
&nbsp;...
Light-year Parsec Light-second Astronomical unit Talk:Light-year/Archive 1 Speed of light Observable universe Warp drive Angular diameter List of unusual units of measurement
The <b>light</b>-<b>year</b> is a unit of length used to express astronomical distances and 
measures about 9.46 trillion <b>kilometres</b> (9.46 x 10<sup>12</sup> <b>km</b>) or 5.88 trillion miles (
5.88 x 10<sup>12</sup> mi). As defined by the International Astronomical Union (IAU), a <b>light</b>-
<b>year</b> is the <b>distance</b> that light travels in vacuum in <b>one</b> Julian year ... the 
astronomical unit, <b>equal</b> to the radius of the Earth&#39;s orbit (1.50×10<sup>8</sup> <b>km</b> or&nbsp;... <b>1</b> pc in ... ... is <b>equal</b> to ... metric (SI) units, 3.0857×10<sup>16</sup> m ~31 petametres &middot; 
imperial &amp; US units, 1.9174×10<sup>13</sup> mi &middot; astronomical units, 2.06265×10<sup>5</sup> au 3.261
56 ly. The parsec (symbol: pc) is a unit of length used to measure the large 
distances to astronomical ... <b>One</b> parsec is approximately <b>equal</b> to 31 trillion 
<b>kilometres</b> (3.1×10<sup>13</sup> <b>km</b>) or&nbsp;... The light-second is a unit of length useful in astronomy, telecommunications and 
relativistic physics. It is defined as the <b>distance</b> that light travels in free space in 
<b>one</b> second, and is <b>equal</b> to exactly ... The more commonly used <b>light</b>-<b>year</b> is also 
presently defined to be <b>equal</b> to precisely 31557600 light-seconds, since the&nbsp;... The astronomical unit is a unit of length, roughly the <b>distance</b> from Earth to the 
Sun and <b>equal</b> to ... The grey line indicates the Earth–Sun distance, which on 
average is about 1 astronomical unit. ... The <b>light</b>-<b>year</b> is often used in popular 
works, but is not an approved non-SI unit and is rarely used by professional 
astronomers. year <b>equals</b> 365.25 days. Article said <b>light year</b> was defined using the ... The 
International Astronomical Union defines a <b>light year</b> as the <b>distance</b> light travels 
in <b>one</b> Julian year (365.25 days exactly). The speed of light in vacuum, commonly denoted c, is a universal physical 
constant important ... In a medium, light usually does not propagate at a speed 
<b>equal</b> to c; further, different types of light wave ... A <b>light</b>-<b>year</b> is the <b>distance</b> light 
travels in <b>one</b> year, around 9461 billion <b>kilometres</b>, 5879 billion miles, or 0.3066 
parsecs. The observable universe is a spherical region of the universe comprising all 
matter that can be ... For example, the current <b>distance</b> to this horizon is about 16 
billion <b>light</b>-<b>years</b>, meaning that ... the inflation occurred was approximately <b>equal</b> 
to the speed of light times its age, that would ... It is about <b>1</b> billion <b>light</b>-<b>years</b> 
across. A warp drive is a theoretical superluminal spacecraft propulsion system in <b>many</b> 
science fiction ... Achieving warp factor <b>1</b> is <b>equal</b> to breaking the light barrier, 
while the actual velocity ... The modified Voyager is able to cover a <b>distance</b> of 
300 <b>light years</b> with the slipstream modification before the system becomes 
unstable. The angular diameter, angular size, apparent diameter, or apparent size is an 
angular ... Angular radius <b>equals</b> half of the angular diameter. ... The angular 
diameter of the Sun, from a <b>distance</b> of <b>one light</b>-<b>year</b>, is 0.03″, and that of Earth
&nbsp;... An unusual unit of measurement is a unit of measurement that does not form part 
of a coherent ... <b>One</b> rack unit (U) is 1.75 inches (44.45 mm) and is used to 
measure rack-mountable ... This <b>distance</b> is <b>equal</b> to about 15.8 <b>light</b>-<b>years</b>, 149.6 
Pm or 4.8 parsecs, and is about twice the <b>distance</b> from Earth to the star Sirius.
9.5 trillion kilometres
Light-year