Light travels how many kilometers from the moon to the earth?

Answer 1

The reflected sunlight from the moon takes about 1.278 seconds to travel to the earth. The distance is about 384,000 kilometers at nearly 300,000 km/sec.

(Laser light from Earth that is bounced off the Moon has a round-trip of about 2.556 seconds.)

Answer 2

Answer: In relation to distances out in space the moon is not far from Earth, so moonlight takes just less than 1/2 a minute to get here.

Answer: Just a little over a second. Light travels at 300,000 km/sec.

Answer 3

The time for light to travel from the Moon to Earth is about one and a quarter seconds.

Light travels through space at roughly 300,000 km/second, so the average distance between the Earth and the Moon (about 384,399 kilometers) is traversed in 1.28 seconds.

At the approximate perigee and apogee (356000 to 407000 kilometers), this will vary between 1.18 seconds and 1.36 seconds.

Answer 4

As the moon's orbit around the Earth is elliptical, the distance between the moon and the Earth varies.

When it is closest to the Earth (at Perigee), the distance is 363,104 km.

When it is farthest from the Earth (at Apogee), the distance is 405,696 km.

The mean distance is 384,399 km.

Please check the related link for a better idea of this concept. For the Earth's orbit around the Sun, the terms used are Perhelion and Aphelion instead of Perigee and Apogee.

As the Moon orbits our planet, it's distance varies from about 221,000 to 252,000 miles.

Answer 5

Since the moon's orbit is not exactly circular, and the gravitational attraction of the sun is quite strong around here,
the moon's distance from the earth varies quite a bit.

The published "average" distance is 238,855.7 miles (384,401 km).

Answer 6

It take approximately 5 seconds for a strong laser to hit the moon and return to earth. __________________ It's less than that. The Moon's orbit averages 384,400 km from Earth, and the speed of light is 300,000 KM/sec. So the round-trip is closer to 2.4 seconds.

Answer 7

From a star to the Moon, it will take the same time it takes from the star to Earth. The Moon is only at a distance of about one light-second from Earth, and this distance is puny, compared to the distance to stars.

The closest star, of course, is our own Sun; distance is about 8 light-minutes (it takes light 8 minutes from the Sun to Earth).

The closest star after the Sun is Toliman (Rigil Kentaurus), at a distance of 4.3 light years. Star system, actually; the system consists of 3 stars; the one nearest to us is called Proxima Centauri.

From a star to the Moon, it will take the same time it takes from the star to Earth. The Moon is only at a distance of about one light-second from Earth, and this distance is puny, compared to the distance to stars.

The closest star, of course, is our own Sun; distance is about 8 light-minutes (it takes light 8 minutes from the Sun to Earth).

The closest star after the Sun is Toliman (Rigil Kentaurus), at a distance of 4.3 light years. Star system, actually; the system consists of 3 stars; the one nearest to us is called Proxima Centauri.

From a star to the Moon, it will take the same time it takes from the star to Earth. The Moon is only at a distance of about one light-second from Earth, and this distance is puny, compared to the distance to stars.

The closest star, of course, is our own Sun; distance is about 8 light-minutes (it takes light 8 minutes from the Sun to Earth).

The closest star after the Sun is Toliman (Rigil Kentaurus), at a distance of 4.3 light years. Star system, actually; the system consists of 3 stars; the one nearest to us is called Proxima Centauri.

From a star to the Moon, it will take the same time it takes from the star to Earth. The Moon is only at a distance of about one light-second from Earth, and this distance is puny, compared to the distance to stars.

The closest star, of course, is our own Sun; distance is about 8 light-minutes (it takes light 8 minutes from the Sun to Earth).

The closest star after the Sun is Toliman (Rigil Kentaurus), at a distance of 4.3 light years. Star system, actually; the system consists of 3 stars; the one nearest to us is called Proxima Centauri.

Answer 8

At a speed of 186,000 miles per second, it takes light (or radio waves, which are also a form of electromagnetic radiation) about 1.5 seconds to travel the 250,000 miles to the Moon. The return trip will take another 1.5 seconds, so about 3 seconds for the round trip.

Answer 9

From a star to the Moon, it will take the same time it takes from the star to Earth. The Moon is only at a distance of about one light-second from Earth, and this distance is puny, compared to the distance to stars.

The closest star, of course, is our own Sun; distance is about 8 light-minutes (it takes light 8 minutes from the Sun to Earth).

The closest star after the Sun is Toliman (Rigil Kentaurus), at a distance of 4.3 light years. Star system, actually; the system consists of 3 stars; the one nearest to us is called Proxima Centauri.

Answer 10

Roughly 2.5 seconds. Let's do the math:

The average distance between the moon's surface and the earth's surface is 380,500 kilometers(km). Light is an electromagnetic wave and travels at a speed roughly 3 x 10^8 meters/second(m/s) in a vacuum. Since distance = speed*time the time it takes for the laser pulse to travel from the the earth to the moon is, time = distance/speed. For round trip time = 2*(distance/speed). So the calculation is: time=2*(38500 x 10^3 m / 3 x 10^8 m/s) = 2.56 s.