y is the sun yellow???

Answer 1

Because of its size which affects its surface temperature. Small stars are cool, so they're red. A little bit bigger stars are a little hotter, so they're orange. Then there's yellow, white, and the hottest, blue. Later in life (or evolution, whatever) a star will enter a stage that it swells up and turns red (like a pimple), but for the most part the size (or its mass to be more precise) determines the color.

Answer 2

It isn't, really. The color yellow is a purely human interpretation of a collection of radiation that hits the retinae of our eyes and gets processed by our visual cortex.

Animals seem to have some analogous way of discriminating light by some kind of 'coloration' sense, but we have no way to know if their brains actually 'see' the same thing we do when they look at 'yellow' light. Color detection is caused by photosensitive cells called 'cones', and some animals have none of these and would see the Sun as, presumably some shade of grey since there retinae have the black-white sensitive 'rods' instead, and which have a greater light sensitivity.

Answer 3

Why? The combination of the combustion of the gasses on the sun itself and the atmosphere of the earth and the particulate matter in the atmosphere.

Sometimes the sun will look red. This is because of pollution in the air. Many years ago when Mt. Pinitubo in the Phillipines erupted sunsets were quite reddish. This was due to the ash.

Answer 4

That is a function of its surface temperature.

Answer 5

because it is a ball of fire far away

Answer 6

because its fire..