Essay on Sun

Topics: Sun, Earth, Star Pages: 2 (464 words) Published: October 11, 2011
Essay On Sun

The Sun has the reputation of being the most stable burning star, astronomers observe. Its extreme stability allows humans to exist on Earth. But this stability won’t last forever. The sun is a burning star that allows the planet Earth to sustain life and flourish over the life span of the hydrogen giant. A few questions arise with the sun and its ability to burn so bright without being unstable. For one, if this were possible, could swallow up to 109 earths to put the stars size into perspective. The sun is about 93 million miles away from the earth and you can still feel the intense heat that it gives off. The surface temperature of the sun is about 6,000 degrees kelvin and has sunspots on the parts of the surface that are cooler. Many scientists trying to figure it out have observed the stability of the sun. Over there observations, it is concluded that the sun is one of the most stable stars scientists have studied. This stability does not last forever with stars because of the hydrogen fusion that is going on in the core of the star. Over the lifespan of a star, the core gets hotter and the size of the star grows exponentially. While the star grows, the luminosity it releases also grows. The sun will get brighter and brighter as time goes on. This will not happen in our lifetime but over the next millions of years the sun's light will be so bright that earth life will not be able to survive the intense heat. The sun will swell to the size that it will devour Mercury and Venus. This swelling would be like seeing a gigantic red giant rise every morning in the horizon that engulfs the sky instead of the small yellow sun we see today. This is however millions of years away and way beyond our lifetime. I highly doubt humans will even be around at that point due to a natural disaster that is imminent. One interesting fact about the sun is the solar flares it projects in the atmosphere. The solar flares are enormous and could engulf the Earth. Solar...
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