# Distance between the sun and earth

• TyErd
In summary, the distance between the sun and earth is approximately 93 million miles, or 149.6 million kilometers, also known as one astronomical unit (AU). Scientists use methods such as triangulation, radar, and parallax to measure this distance. Although it changes slightly throughout the year due to the elliptical shape of the earth's orbit, the average distance remains constant. Light from the sun takes about 8 minutes and 20 seconds to reach earth, traveling at a speed of approximately 186,282 miles per second (299,792 kilometers per second). The distance is important for life on earth as it determines the amount of sunlight and heat that reaches our planet, essential for vital processes like photosynthesis and regulating the climate.

#### TyErd

is the distance between the sun and Earth the same as the distance between the moon and the sun?

You could find this out easily via searching the web...

TyErd said:
is the distance between the sun and Earth the same as the distance between the moon and the sun?

On average, yes (and the year is the same, too! ) …

both the Moon and the Earth orbit the Sun in almost identical almost exact ellipses, which "braid" each other about 13 times a revolution.

## 1. What is the distance between the sun and earth?

The average distance between the sun and earth is approximately 93 million miles, or 149.6 million kilometers. This is also known as one astronomical unit (AU).

## 2. How do scientists measure the distance between the sun and earth?

Scientists use a variety of methods to measure the distance between the sun and earth, including triangulation, radar, and parallax. These methods involve using mathematical equations and measurements of angles to calculate the distance.

## 3. Does the distance between the sun and earth change?

Yes, the distance between the sun and earth changes slightly throughout the year due to the elliptical shape of the earth's orbit. The closest point in the orbit is called perihelion, and the farthest point is called aphelion. However, the average distance remains constant.

## 4. How long does it take for light from the sun to reach earth?

Light from the sun travels at a speed of approximately 186,282 miles per second (299,792 kilometers per second). This means it takes about 8 minutes and 20 seconds for light from the sun to reach earth.

## 5. Why is the distance between the sun and earth important for life on earth?

The distance between the sun and earth is crucial for life on our planet. It determines the amount of sunlight and heat that reaches earth, which is necessary for photosynthesis and regulating the earth's climate. If the distance were to change significantly, it could have drastic effects on the conditions necessary for life to exist on earth.