After hydrogen fusion in its core has diminished to the point at which it is no longer in hydrostatic equilibrium, the core of the Sun will experience a marked increase in density and temperature while its outer layers expand to eventually become a red giant.It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury and Venus, and render Earth uninhabitable.The English proper name Sun developed from Old English sunne and may be related to south.
When the Sun is low in the sky, atmospheric scattering renders the Sun yellow, red, orange, or magenta.
In paganism, the Sun was a source of life, giving warmth and illumination to mankind.
It was the center of a popular cult among Romans, who would stand at dawn to catch the first rays of sunshine as they prayed.
It was adopted as the Sabbath day by Christians who did not have a Jewish background.
The symbol of light was a pagan device adopted by Christians, and perhaps the most important one that did not come from Jewish traditions.The enormous effect of the Sun on Earth has been recognized since prehistoric times, and the Sun has been regarded by some cultures as a deity.