what is the exact distance from the sun to earth...? EXACT! PLEASE?

Answer 1

Due to the elipse nature of the Earth's orbit, the distance between it an the sun is always varying. It is, on average, 93 million miles.

Answer 2

1 AU = 149,597,870.691 kilometers
Definition: An Astronomical Unit is approximately the mean distance between the Earth and the Sun. It is a derived constant and used to indicate distances within the solar system. Its formal definition is the radius of an unperturbed circular orbit a massless body would revolve about the sun in 2*(pi)/k days (i.e., 365.2568983.... days), where k is defined as the Gaussian constant exactly equal to 0.01720209895. Since an AU is based on radius of a circular orbit, one AU is actually slightly less than the average distance between the Earth and the Sun (approximately 150 million km or 93 million miles).

Historical Background: Tycho Brahe estimated the distance between the Sun and the Earth at 8 million kilometers (5 million miles). Later, Johannes Kepler estimated the AU was at 24 million kilometers (15 million miles). In 1672, Giovanni Cassini made a much better estimate by using Mars. By observing Mars from Paris and having a colleague, Jean Richer, also observe Mars at the same time in French Guiana in South America, Cassini determined the parallax of Mars. From that Cassini was able to calculate the distance from Earth to Mars, and then the distance from Earth to the Sun. Cassini calculated the AU to be at 140 million kilometers (87 million miles), which is lower, but very close to the modern day number.

Answer 3

As an earlier poster noted, the Earth's orbit is an ellipse, not a circle, so the distance from the Earth to the Sun changes over the year.

The AVERAGE distance from the Earth to the Sun is used to define the Astronomical Unit (AU) -- that value is:

1 AU = 1.49597870 x 10^11 meters
1 AU = 9.29558068 x 10^7 miles = 92,955,806.8 miles

That's why most folks say the Sun is 93 million miles away.

Answer 4

It changes all the time. If you want the exact and precise numbers, you need to specify a time. Also, distances like this are usually given as the distance from the center of the Earth to the center of the Sun.

For example, tonight, 2007 March 9 at 00:00 UT,
distance = 148,463,838.58 km
speed away from Sun = 1,636.50 km / hour
Total speed in orbit = 108,008.31 km / hour

One day later, at 2007 March 10 at 00:00 UT,
distance = 148,503,340.07 km
speed away from Sun = 1,655.03 km / hour
Total speed in orbit = 107,986.89 km / hour

UT = Universal Time
EST = UT - 5 hours.

Answer 5

earths orbit is not a perfect circle. we are closer during the winter months and farther away by about 5 million miles during the summer. but the distance is 1 AU (astronomical unit). An AU is defined as the distance from the earth to the sun.

Answer 6

On average the distance between the Sun and Earth is 149.6 million km (92.95 million mi)

Answer 7

Astronomical Unit = 92,955,820.5 miles

The "astronomical unit" is the mean distance as the orbit of Earth is elliptical and has an approximately 3.1 million mile variance

Answer 8

Well that depends on where you consider the sun to start as it's a giant flaming ball of helium in the process of fusing. Would you consider the corona to be the start of the sun?

Answer 9

can't be exact. the earth is always moving and rotating. give a specific time , date, and the 3 demionsional orintation. then i will tell you.

Answer 10

Again, type this in google and you will find out.