Is the Sun’s Actual Color Yellow or White?

The Sun

The Sun is the most prominent feature in our solar system. It has always been the centre of the Universe for humanity. It is the star around which the earth orbits. Here, we will talk about Sun’s actual color later.

The Sun with a radius of  700000 kilometres contains more than 99.8% of the total mass of the Solar System (Jupiter contains most of the rest). The mass of the Sun is 1.989 × 10^30 kgThe Sun’s power (about 386 billion MegaWatts)is produced by nuclear fusion reactions. 

Each second about 700,000,000 tonnes of hydrogen are converted to about 695,000,000 tonnes of helium and 5,000,000 tonnes of energy in the form of gamma rays.

On July 19, 2012, a medium-sized moderately powerful solar flare exploded on the sun’s lower right-hand limb sending out radiation. Generally, the Sun is a very vast topic to be covered or discussed. But do we know everything about our Sun? or should I say do we know something about our Sun? If I ask anyone about Sun’s actual Colour they will obviously come with an answer that it’s Yellow but Is the Sun actually Yellow?

An Erupting Prominence.

Sun’s Actual Color

The Sun does look a little yellow after sunrise and before sunset. But, if you could travel to space and look at the sun, you’d find that it’s actually white.

As we have observed that Prism refract the sunlight into different colours which are shown in the pattern of VIBGYOR.VIBGYOR represents Violet, Indigo, Blue, Green, Yellow, Orange, Red and when these colours are mixed together they form Sun’s actual colour i.e. White. The Sun actually send most photons in the green portion of the spectrum. Our Sun appears yellow because of the atmosphere as our atmosphere scatters light from the Sun, so the apparent colour of the sun changes.

During setting of the sun, more of the shorter wavelength blue is being scattered because of the decreased angle of the sun relative to you, thus the light has to pass through more atmosphere to get to you. This increased diffusion results in less of the blue wavelength being visible to you and thus what remains appears yellow. The Sun looks like a pure white ball especially when you’re out in space.

Sun is actually White.

AMAZING FACTS ABOUT SUN:

  • 100 billion tonnes of dynamite would have to be donated every single second to match the energy that the sun produces.

  • The Sun is middle aged and the astronomers believe it formed around 4.59 billion years ago. In 5 billion years of time, the sun will enter the red phase consuming the Earth.

  • The Sun takes about 240 million years to orbit once around the galactic centre and also it is 25,000 light years away from the centre of the Milky Way galaxy.

  • The Sun’s surface is colder than it’s atmosphere, at around 6,000 kelvin and the atmosphere can reach 10,000 k and the region called corona can be 1 million k.

Corona, the white layer

  • If the sun were to turn off within a week the Earth would be 0ºF. In a Year, it would dip to -100º F and after millions of years, it would be -400ºF.

Snowball Earth

  • While the Sunlight only takes 8 minutes and 19 seconds from the surface of the sun to reach us, it actually takes about 10,000-170,000 years for a photon to travel from the core of the sun to the surface.

Sunlight

  • The Sun is 109 times wider than the Earth and 330,000 times as massive.

Earth and Sun

Please don’t go and check outside as it’s not safe to look directly at the Sun with your unprotected eyes.

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