First I should say that the Earth's orbit around the Sun is elliptical, not perfectly circular, so the Earth-Sun distance is changing as we speak just from the Earth traveling in its orbit around the Sun.
The distance changes as it circles the sun so you will get different distances on different days*
Earth-Sun distance, d = roughly 150 million km (defined as 1 Astronomical Unit)
Radius of the Sun, Rsun = roughly 700,000 km
Orbital speed of Earth, v = roughly 30 km/s
2006-09-28 13:42:32
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answer #1
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answered by momsapplepeye 6
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93 million miles on average, But the orbit is elliptical not circular and so there is a point in the orbit called aphelion (Helios is Greek for Sun) when it is farthest away (July 3rd 2006 was the most recent) and a point in the orbit when it is at its nearest, called perihelion (January 4th 2006 was the most recent).
Aphelion 152,097,701 km = 95,061,063 miles
Perihelion 147,098,074 km = 91,936,296 miles
Perihelion and Aphelion dates till 2010:
2007
Perihelion Jan 3
Aphelion July 7
2008
Perihelion Jan 3
Aphelion July 4
2009
Perihelion Jan 4
Aphelion July 4
2010
Perihelion Jan 3
Aphelion July 6
The time light takes to reach us (just over 8 minutes)varies by about 18 seconds between aphelion and perihelion
PS
I don't think it should take 3.5 years to travel 1 AU to the sun. It is only taking 9.5 years for the New Horizons rocket to get to Pluto, which is at least 28 AU from, earth.
Speed = Distance / Time
so Time = Distance/ Speed
93,000,000 miles / 27,000 miles per hour = 3444 hours = 143.5 days = 20.5 weeks = about 4.75 months
2006-09-29 03:33:48
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answer #2
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answered by Juniper 2
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The Earth's orbit is an ellipse, not a circle. At their nearest approach (about 3 January of each year), Earth and the sun are about 1.471E+11 meters from the sun. At the far end of the orbit, Earth is about 1.521E+11 meters from the sun. One astronomical unit is defined to be exactly 149,597,870,691 meters. Earth's orbit changes very slowly with time, and at present it's AVERAGE distance from the sun is 1.00000011 au, which is 149,597,887,147 meters.
2006-09-28 20:50:13
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answer #3
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answered by David S 5
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93 Million miles. Keep in mind that if the Sun and Earth were closer or farther away by a factor of 2%, life on Earth would be impossible.
2006-09-28 20:41:32
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answer #4
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answered by Bags 5
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93 million miles...give or take a few feet...and it takes light about 8 minutes to get here... 186.000 MPS... so in one year light could go from the sun to the earth and back 63,072,000 times..
DAVID Si accept what you say, but the difference between 1 and 1.5au, (thata fair distance isnt it? so, because were at a closer proximity to the sun, could that account for the general warming effects were seeing globally?
i put my foot closer to teh fire, it burns, principle... and when we have colder seasons, were coser to 1.5au...and further away from teh
2006-09-28 21:47:20
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answer #5
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answered by Anonymous
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The orbit of the earth is eliptical, not circular .
At perihelion, on January 4th, 2006, the sun was a scant 93,405,956 miles away.
At aphelion, on July 3rd, it was 94,507, 891 miles away.
Please don't ask me how far away it is at this moment.
2006-09-28 20:48:35
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answer #6
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answered by GreenHornet 5
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93 million miles away.
Or 8 light minutes
(It takes light 8 minutes from the sun to reach earth)
So the sun may be exploding right now but we don't know
2006-09-28 20:48:56
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answer #7
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answered by piguyfun 2
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It is not possible to give an exact distance, only an average due to the elliptical nature of the Earth's orbit.
2006-09-29 06:00:32
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answer #8
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answered by advent m 3
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150,000,000 km or about 93,000,000 miles. "Exact" varies as the Earth's orbit around the sun is not completely circular. It is "exactly" 1 Astronomical Unit.
2006-09-28 20:43:35
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answer #9
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answered by Anonymous
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One AU(astronomical unit) or about 93 million miles.
2006-09-28 20:41:11
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answer #10
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answered by Anonymous
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