# Who first determined the distance between the earth and sun and what method did he use?

The method used was to carefully time the very rare transit of Venus across the face of the sun. It was 1st attempted by Jeremiah Horrocks from England in 1639 (published in 1661) but he was off by about 100%.

The 1st accurate measurements followed the 1761 and 1769 transits and were done by the French astronomer Jérôme Lalande.

For more details see http://en.wikipedia.org/wiki/Transit_of_Venus#Modern_observations

### How far is the proxima centauri to earth by walking?

The distance between two points is the distance between them. It doesn't depend on the method an object uses to move between the two points. It also doesn't depend on what route an object follows between them, or even whether or not anything moves between the two points. The distance between the earth and the Orion Nebula is the distance, even though no object has ever moved between the earth and the Orion Nebula.

### What is the distance between the moon and the clouds?

The same as between the Moon and the Earth. The distance from the clouds to the surface of the Earth is insignificant, compared to the Moon-Earth distance. The same as between the Moon and the Earth. The distance from the clouds to the surface of the Earth is insignificant, compared to the Moon-Earth distance. The same as between the Moon and the Earth. The distance from the clouds to the surface of the Earth is…

### In space How do we know how far a so and so Star is from Earth?

Several methods are used, depending on the distance. For nearer stars, the parallax method is used: Sine Earth moves around the Sun, the direction of the star, against the background, changes. This method, of course, requires precise measurement of the parallax (of this angular change), as well as knowledge of the distance between the Sun and Earth.

### What is the distance between the Moon Earth and Sun?

The Earth and the Moon have the same distance from the Sun (more or less) which is 149.6 million kilometers. The distance between the Earth and the Moon is 385,000 kilometers. The average distance, in miles, between the earth and moon is about 239 thousand miles. Between the earth and sun it is about 93 million miles--roughly the same as the average distance between the moon and sun, because the earth and moon are right…

### What is the distance between Jupiter and Earth in astronomical units?

Since 1 AU is roughly equal to 149,597,871 Kilometers, (based on the mean distance between the Earth and the Sun) and the farthest distance between Earth and Jupiter is about 928.5 million Kilometers, we can divide to find the answer of 6.2 AU's. The closest distance between Earth and Jupiter is near 629 million Kilometers. Dividing once again gets us an distance of around 4.2 AU's So, the distance between Earth and Jupiter varies from…

### How is the number of light years figured between two celestial objects?

To find the number of light years between two celestial objects, we first find the distance from each object to earth. If we connect the dots between Earth and the two objects, we have a triangle. We to sides lengths of that triangle (the distances between Earth and the objects), and we can measure one angle (the angle at the vertex where Earth is. This is enough information to find the distance between the objects…

### Distence between the earth and sun in light year?

A light year is the distance light travels in a year. The distance between the Earth and Sun is about 8 light minutes - it takes light 8 minutes to travel this distance. A light year is the distance light travels in a year. The distance between the Earth and Sun is about 8 light minutes - it takes light 8 minutes to travel this distance. A light year is the distance light travels in…

### How long is the distance between Mars and Earth?

the distance between earth and mars changes after every minute. Both the planets travel along elliptical orbit that are not synchronized so they are continuously altering distance between them.the average distance between them is 225 million km. the closest approach was in the year 2003 when the earth and mars were separated by a distance of 56 million km.

### Why does the shape of the tidal bulge change during the course of a month?

As the orbits of the Moon about the Earth and the Earth around the Sun are not circular, the distance to each of these bodies varies. Since the strength of gravitational attraction is determined, in part, by the distance between the objects, as the distances change so too does the strength of the tide-raising forces.