OK. If a light year is a measurment of distance, than how many light years are there from Earth to Neptune?
825824
Neptune is what, 2 or 3 billion miles away?  A light year is 6 trillion miles, so the distance is less than .001 light years.  Light years are practical only when measuring interstellar distances.
1098746
hold on here, this isnt a short answer - \n    the Earth is on average 92Million miles from the sun, times pi for the circumforance and its roughly 290Million miles around.  divided by 365 for the number of days, the earth travels some 790,000 miles on one day, ya thats high on the odometer.  distance in one day divided by 24 hours comes to 33,000 MPH, now i did this on my computer but it does seem right, \n\nNow part 2, hang on here, big numbers ahead, the Solar System wihich Earth belongs to is roughly 26,000 Lightyears from the galactic core, (which has a Supermassive Black hole as heavy as 6 Trillion suns).  it take a quarter of a Billion years (250,000,000) for our solor system to complete one revolution around the galaxy. The circumferance could be some 80,000 Lightyears,  though i am not sure how to calculate the speed of the solar system.
1099322
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.\n\nWhy would you want such a big unit of distance? Well, on Earth, a kilometer may be just fine. It is a few hundred kilometers from New York City to Washington, DC; it is a few thousand kilometers from California to Maine. In the Universe, the kilometer is just too small to be useful. For example, the distance to the next nearest big galaxy, the Andromeda Galaxy, is 21 quintillion km. That's 21,000,000,000,000,000,000 km. This is a number so large that it becomes hard to write and hard to interpret. So astronomers use other units of distance.
19452
"A light year is the distance light travels in one year: about 9.461 × 10^15 metres or about 5.879 × 10^12 miles."\n\nFor some context, it is 4.22 light years to Proxima Centauri, the nearest star outside the solar system.
246225
Currently, the accepted view is that the universe is approximately 78 billion light-years in size. A light-year is the distance light travels in one year (a large number since light travels about 186,000 miles each second). To determine this, astronomers used the WMAP project. See the links to determine how this was accomplished, but only if you don't mind being confused (it is quite lengthy and quite confusing - even for an astronomer such as myself!).
963492
light years are billions of miles long, the moon is only ~250,000 miles from the earth\n\ntry taking how many miles light travels in 1 second 186,000 miles, multiply that by 31,557,600 and you get your answer\n\nhint, there are 365.25 days in a year, that is how we get a leap year every 4 years.\n\ncheers - corey
333277
We've been measureing this quantity for a number of years, and we are getting better results all the time.  The best news is that the different techniques we have been using all agree that the distance is about 26,000 light years.
670758
Neptune: my favorite planet!\n\nYou have great tastes in planets my friend.  I will gladly help you out.  \n\nNeptune is about 49500 kilometers. in diameter, about four times the size of Earth, which is about 12800 kilometers. in diameter. Neptune and Uranus are almost the same size, but both seem tiny in comparison to mighty Jupiter, which is almost three times as large as either of them. \n\nAlso, At the center, there is a large rocky core about the size of earth, one of the largest cores of the planets.\n\nEnjoy!\n\nThank you for making this question!
172339
Normally you'd describe shorter distances like that in AU (astronimical units - 1 AU=distance from earth to sun).\nBut - The distance is almost exactly 499 lightseconds - ie \nearth2sun in lightseconds/(days per year*seconds per day).\n499/(365.25*86400)=0.000016 lightyears.
70056
The sun. The sun is, on average, 93 million miles from the earth. Pluto orbits the sun over 2 billion miles away. The nearest star is over 4 light years away. (Light travels 186,000 miles, or about 300,000,000 meters, in a second - try figuring out how far that is in a year!) The nearest galaxy is over 4 million light years away - an amazing distance!
19286
The light-year is a measure of distance, not time. It is the total distance that a beam of light, moving in a straight line, travels in one year. To obtain an idea of the size of a light-year, take the circumference of the earth (24,900 miles), lay it out in a straight line, multiply the length of the line by 7.5 (the corresponding distance is one light-second), then place 31.6 million similar lines end to end. The resulting distance is almost 6 trillion (6,000,000,000,000) miles!
95075
Let's see... \nIf you accept the Nemesis theory, the outer "boundary" is a good 2.5 light years out from the center,\nthat makes the circumference around 20 ly,\nlight travels roughly 386000 miles per second,\n31536000 seconds per year,\nmaking 1 ly about 12172896000000 miles,\nfor a total circumference of 243457920000000 miles.\n\nAnything else?
3290
The distance averages at 93,000,000 miles.  This distance is also known as an Astronomical Unit.
580048
Pluto is 4,583,000,000 miles from the sun at maximum; 2,757,000,000 at minimum.  Since Neptune goes out as far as 2,824,000,000 it is occasionally closer in than Neptune!
373696
Since there are 63,360 inches per mile, and since the distance to Pluto from Earth is 2.67 billion miles, then just multiply it.\n\nThe real value: 1.69171E+14 inches, so that's a lot of inches lol
342843
About 93 million miles.  It's a distance used to measure distance of certain space objects.  It is called 1 AU or Astonomical Unit.\n\nIt is NOT 1 light year.  It's actually about 8 light minutes.
489804
Its 320 light years away. How long it would take to make a round trip would depend on how fast you travel. if travelling at the speed of light it would take 640 years return