How long would it take to travel from Neptune in light years?

Answer 1

The average distance from the Sun to Uranus is 2.88 billion km. The distance from the Earth to Uranus would vary depending upon if our planet is on the near side of the Sun from Uranus or the far side.

If we take the average distance of the Sun to Uranus as a neutral point, and the speed of light is 300,000 km/sec ---

(2.88 billion km) / (300,000 km/sec) = 9600 light sec, or about 160 light min, much, much less than a light year. In other words, traveling at the speed of light, it would only take about 2 1/2 hrs to get to Uranus.

Light years are a term usually reserved for great distances, such as the distance between stars.

Answer 2

Neptune is about 30 AU (astronomic units) from the sun, The Earth, by definition is 1 and about 8 light minutes so Neptune is sometimes close to 240 light minutes or 40 light hours or

0.00456 light years from Earth (at certain times)

Answer 3

The general formula used for speed problems is based on the definition of speed:

speed = distance / time

Solving for time:

time = distance / speed

So, it really depends on the speed at which you move. If you move at a speed very close to the speed of light (not possible with current technology), it would take slightly over a year to travel a light-year. If you travel at 1/100 of the speed of light - still not possible with current technology! (that would be 3000 km/sec, 10.8 million kilometers/hour) or - it would take 100 years.

In summary, to travel a distance of one light-year, for a spaceship with astronauts, is currently not possible AT ALL, but it might be possible some time in the future.

Answer 4

Earth's average distance from the sun is 93 million miles.

Neptune's average distance from the sun is 2,793 million miles.

When earth and Neptune are at their closest possible separation ... lined up on the

same side of the sun ... they're 2,700 million miles apart. That's 0.00046 light year.

(rounded)

When earth and Neptune are at their farthest possible separation ... lined up on opposite

sides of the sun ... they're 2,886 million miles apart. That's 0.00049 light year. (rounded)

Answer 5

Neptune's average distance from the sun is 2.793 billion miles.

Speed of light = 186,282 miles per second.

Time for light to cover Neptune's average distance from the sun =

(2,793,000,000 / 186,282) = 14,993 seconds = 4hours9minutes53seconds (rounded)

Answer 6

Neptune is 4.18 light hours from the Sun (or .00047684 light years)

Answer 7

Neptune is 4.18 light hours from the Sun (or .00047684 light years).

Answer 8

Traveling from Neptune to Earth would take about 4 light-hours, as light traveling at the speed of light takes about 4 hours to reach Earth from Neptune.

Answer 9

It takes light 250 minutes (a bit over 4 hours) to get from the sun to Neptune. That makes Neptune much less than 1 light year away. Not even a light day. About 0.000475 light years.

Answer 10

A light year is a distance. Time is another dimension. It would take about 40 hours or light to travel to Neptune from Earth (that is a very small portion of a year).