What is the sun?

Answer 1

Sun

The star around which the Earth revolves, and the planet's source of light and heat, hence life. The Sun is a globe of gas, 1.4 × 106 km (8.65 × 105 mi) in diameter with a mass 333,000 times the Earth, held together by its own gravity. The surface temperature of the Sun is about 6000 K (10,000°F); since solids and liquids do not exist at these temperatures, the Sun is entirely gaseous. Almost all the gas is in atomic form, although a few molecules exist in the coolest surface regions, such as sunspots.

The Sun is a typical member of the spectral class dG2, stars of surface temperature 6000 K. The d stands for a dwarf, a normal star of that class. See also Spectral type.

Solar structure

The interior of the Sun can be studied only by inference from the observed properties of the entire star. The great mass of the Sun presses down on the center, requiring a gas with a central density of near 90 g/cm3 and 2 × 107 K (3.6 × 106°F) temperature to support it. At these huge temperatures and densities, nuclear reactions take place. The radiation produced flows outward till it is radiated into space by the surface (photosphere) at 6000 K (10,000°F).

Energy production

The energy of the Sun is produced by the conversion of hydrogen into helium. For each hydrogen atom converted, one neutrino is produced. These neutrinos are detected, but less than the expected number. See also Neutrino; Solar neutrinos.

The material at the center of the Sun is so dense that a few millimeters are opaque, so the photons created by nuclear reactions are continually absorbed and reemitted and thus make their way to the surface by a random walk. The atoms in the center of the Sun are entirely stripped of their electrons by the high temperatures, and most of the absorption is by continuum processes, such as the scattering of light by electrons. Because there are so many absorption and emission processes along the way, it can take as long as a million years to complete the random walk to the surface.

Answer 2

The sun is a G2V class star, sometimes refered to as Sol, around which all planets, and many assorted other items, including dust, comets, asteroids, debris, and dwarf planets orbit. It accounts for more than 75% of the mass of the solar system The sun is in practice a giant fusion reactor that powers all life in the solar system in some way.

Answer 3

The sun is the central astral body of our solar system and the sun's name is SOL. It is a yellow star and burns off of hydrogen fusion to create helium along with intense amounts of energy.

According to TV it also likes to drop raisins into cereal

Answer 4

Boy, just got to 'splain everything to you son!!! It's that there big orange ball that Neptune throws out of the ocean each morning for his dog pluto and it just kinda hangs around the sky all day and eventually falls back into the ocean. Don't have much of a use that I can see, but sure puts off a real pretty glow while it is there. I used to just lay back and look at it all day. Momma said that I shouldn't, that it would do sumpin to my brain or eyes or sumpin like that. Sure hope this clears that up for yu. Bubba

Answer 5

The sun is that giant ball of fiery gases that lights up the sky every morning and makes all those tan lines.

Answer 6

The star which is nearest to our planet & the galaxy of nine ( oops sorry eight planets ) in our milky way galaxy.

Since it is so near, we see it so big/ huge compared to the rest which we only see in the night when sun has descended.

Answer 7

Sun is our own star

Answer 8

"when everybody admired the moon; i fell in love with the sun; reaching to it is all that i live for.."

well .. sun may be just another light giving celestial body for everybody ..
but for me sun is light..
sun is life..
sun is love..
sun is passion..
sun is continuous provoker of dreams..
sun is what perfectly symbolises what i wanna be..

Answer 9

big gas ball sry ok the sun is just a really big star

Answer 10

all human beings likes the solar, different than for those uncommon people who've hypersensitive reactions to the UV rays of the solar. each so often this is sooooo severe, that human beings can die is a solar ray touches their pores and skin. :(