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Rayon vert |
by ComputerHotline on Flickr |
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Sun - is a star in the center of our solar system.
- is 4.5 billion years old.
- will last another 5 billion years from now.
- is composed primarily of the chemical elements hydrogen and helium; they account for 74.9% and 23.8% of the mass of the Sun in the photo-sphere, respectively
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Sunset in Acapulco |
by Esparta on Flickr |
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- The sun is actually white but because of the atmosphere it appears yellow of orange.
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Sunset & the Thinker |
by Esparta on Flickr |
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- Its surface temperature is approximately 5,778 K (5,505 °C; 9,941 °F)
- All matter in the Sun is in the form of gas and plasma because of its high temperatures
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over the sun |
by mindfulness on Flickr |
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- The distance of the Sun from the Earth is approximately 149.6 million kilometers
- At this average distance, light travels from the Sun to Earth in about 8 minutes and 19 seconds
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Mentari pagi 08/08/08 |
by emrank on Flickr |
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- The energy of sunlight supports almost all life on Earth by photosynthesis, and drives Earth's climate and weather
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To Beseech Thee |
by The Wandering Angel on Flickr |
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- The corona is the extended outer atmosphere of the Sun, which is much larger in volume than the Sun itself.
- The corona continuously expands into the space forming the solar wind, which fills all the Solar System.
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Apocalypse film |
by kevindooley on Flickr |
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- Effects of solar activity on Earth include auroras at moderate to high latitudes, and the disruption of radio communications and electric power.
- Solar activity is thought to have played a large role in the formation and evolution of the Solar System.
- Solar activity changes the structure of Earth's outer atmosphere.
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