l mean the ratio of sun to earth and the distance from su n to earth, also like to know the composition of sun
what is the ratio of star to sun
2007-01-16 23:15:58 · 10 answers · asked by roy m 1 in Science & Mathematics ➔ Earth Sciences & Geology
The sun's diameter is about 100 times that of the earth, 1.4 million kms. It is 150 million km away, another factor of 100.
It's made for 75% of hydrogen, 24% helium and rest is various other stuff.
The sun is an average star. Stars have a radii that range from 10 times smaller to a whopping 2000 times bigger. However, this biggies are very rare. In the Milky Way about half of the stars are smaller than the sun, and half again are bigger.
2007-01-16 23:44:07 · answer #1 · answered by cordefr 7 · 0⤊ 0⤋
The sun itself makes up an estimated 99.86% of the solar system’s total mass. Earths Diameter: 7,926 miles. Sun's Diameter: 864,400 miles
Sun's distance from Earth: 149,597,900 km, or 92,955,800 miles
Sun's Volume: 1,142,200,000,000,000,000 km3
Mass: 1,989,000,000,000,000,000,000,000,000,000 kg
The Sun is the closest star to Earth, at a mean distance from our planet of 149.60 million kilometers (92.96 million miles). This distance is known as an astronomical unit (abbreviated AU), and sets the scale for measuring distances all across the solar system.
The Sun is believed to be more than 4.6 billion years old, and is comprised of mostly hydrogen (74%) and helium (25%). The remaining 1% is made up of small amounts of various heavier elements. The Sun can be divided into three main layers: a core, a radiative zone, and a convective zone. The Sun's energy comes from thermonuclear reactions (converting hydrogen to helium) in the core, where the temperature is 15 to 25 million degrees. The energy radiates through the middle layer, then bubbles and boils to the surface in a process called convection. Charged particles, called the solar wind, stream out at a million miles an hour.
Does that answer everything?
2007-01-16 23:43:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Note above.
In terms of distance to earth, after a certain distance it becomes easier to say how long light takes to make the journey, here it is about 8 minutes. In comparison, light can go around the earth about 8 times in a second. It is about three hours out to Uranus and 4 years to the nearest star (30,000 years to the centre of the galaxy).
Comparing the sun to other stars we are middle of the range. Rarely other stars can be quite big over 100 times the diameter of our one but their mas is not often more than 20 times that of our sun and can't get much less than 10% for a star to be possible. Really big stars live fast and die young in a massive explosion that can sometimes leave 'holes' behind.
2007-01-17 00:43:41 · answer #3 · answered by mince42 4 · 0⤊ 0⤋
The Earth is approximately 93 million miles (150 million kilometers) from the sun.
Imagine a flat disc about 7/8 inches across. The size of the earth would be about the size of a grape seed.
Check this out http://vathena.arc.nasa.gov/curric/space/sun/sunearth.html
2007-01-18 00:25:04 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The composition of the sun is 71% hydrogen, 27.1% helium and less than 2% of all other elements.
The radius of the sun at 696,000 km is 109 times the Earth's radius. Its surface gravity is 274 m/s2 or 28.0 times that of the Earth. Its mean density is 1410 kg/m3 or 0.255 times the mean density of Earth.
2007-01-16 23:39:50 · answer #5 · answered by katie 3 · 1⤊ 0⤋
well, the Sun's diameter is about 110x the diameter of earth, It is a million times the volume, and it weighs 333,000x as much as earth.
The sun sits about 93 million miles away from earth, and is made up largely of hydrogen and helium. The hydrogen in the core of the sun is undergoing fusion reactions to create helium, and these reactions are what power the sun.
2007-01-16 23:40:39 · answer #6 · answered by Zach T 2 · 0⤊ 0⤋
The sunlight is a million,3 hundred,000 circumstances bigger than the earth. yet in any different case of finding at that's this: If the earth became into on the exterior of the sunlight, it may well be resembling a basket ball on the exterior of the earth.
2017-01-01 03:30:33 · answer #7 · answered by ? 4 · 0⤊ 0⤋
If the Sun were the size of Jose Mourinho's ego, the Earth would be as large as Jade Goody's brain, and situated somewhere outside Stoke.
2007-01-16 23:18:56 · answer #8 · answered by gvih2g2 5 · 0⤊ 2⤋
Try looking on `The web` you might then get a concise answer.
2007-01-16 23:28:53 · answer #9 · answered by Spanner 6 · 1⤊ 1⤋
http://solarviews.com/eng/sun.htm
should tell you all you need to know.
2007-01-16 23:31:25 · answer #10 · answered by BB 7 · 0⤊ 0⤋