User talk:Yoop2

"sun"

the sun is very use full but it can be very dangers

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the sun can be very danger because you can get sun burn. if you get to close to the sun you will turn into kind of nothing well the sun is dangers if it gets to close to anything it will turn into nothing the sun can wipe out the hole entire solar system  and that is like what most people fear. me personally don't fear that. ________________________________________________________________________________________________________________________________________                                                        (good things:) )

the good thing a bout the sun Vitamin D. The sun's UV rays help your body make this nutrient, which is important for your bones, blood cells, and immune system. It also helps you take in and use certain minerals, like calcium and phosphorus.When you think of the sun, your first thought might be about the damage it can do. And too much can cause several kinds of serious health issues. But small amounts, especially early in the day before it’s at its brightest, can be good for you in some ways.This answer is different for everyone. It depends on your skin tone, age, health history, diet, and where you live. In general, scientists think 5 to 15 minutes -- up to 30 if you’re dark-skinned -- is about right to get the most out of it without causing any health problems. You can stay out longer and get the same effect if you use sunscreen. Talk to your doctor about what’s right for you. the sun’s UV rays help your body make this nutrient, which is important for your bones, blood cells, and immune system. It also helps you take in and use certain minerals, like calcium and phosphorus. And while most people get enough vitamin D from food, children who don’t can get rickets, which softens and weakens their bones.our eyes need light to help set your body’s internal clock. Early morning sunlight in particular seems to help people get to sleep at night. This may be more important as you age because your eyes are less able to take in light, and you’re more likely to have problems going to sleep. Morning light also seems to help people keep the fat off. You need 20 to 30 minutes between 8 a.m. and noon to make a difference, but the earlier you get it, the better it seems to work. Scientists think the sun’s rays may shrink fat cells below your skin’s surface. More sunshine means you’re probably getting more exercise too, which is good for you in lots of ways, including shedding pounds. ________________________________________________________________________________________________________________________________________                                                            (facts)

1.The Sun accounts for 99.86% of the mass in the solar system. 2.Over one million Earth's could fit inside the Sun. 3.One day the Sun will consume the Earth 4.The energy created by the Sun's core is nuclear fusion 5.The Sun is almost a perfect sphere. 6.The Sun is travelling at 220 km per second ________________________________________________________________________________________________________________________________________                                                 (systems)

Surface temperature: 5,778 K Mass: 1.989 × 10^30 kg Age: 4.603 billion years Radius: 432,690 mi Distance to Earth: 92.96 million mi Spectral type: G2V ________________________________________________________________________________________________________________________________________                                                   (dicovery)

Galileo was the discover of the sun Curious about the Sun, Galileo used his telescope to learn more. Not knowing that looking at our very own star would damage his eyesight, Galileo pointed his telescope towards the Sun. He discovered that the sun has sunspots, which appear to be dark in color. _______________________________________________________________________________________________________________________________________                                                (named)

Helios The ancient Greeks personified the sun as a handsome god named Helios. His astronomical pedigree was impeccable: He was the son of the Titan Hyperion and the Titaness Theia. Helios was also the brother of Helene, the goddess of the Moon, and Eos, the goddess of the dawn. ________________________________________________________________________________________________________________________________________                                            (happen in a billon years)

In approximately 5 billion years, the sun will begin the helium-burning process, turning into a red giant star. When it expands, its outer layers will consume Mercury and Venus, and reach Earth.Most of the stars in the universe are main sequence stars — those converting hydrogen into helium via nuclear fusion. A main sequence star may have a mass between a third to eight times that of the sun and eventually burn through the hydrogen in its core. Over its life, the outward pressure of fusion has balanced against the inward pressure of gravity. Once the fusion stops, gravity takes the lead and compresses the star smaller and tighter.

Temperatures increase with the contraction, eventually reaching levels where helium is able to fuse into carbon. Depending on the mass of the star, the helium burning might be gradual or might begin with an explosive flash.

"Although fusion is no longer taking place in the core, the rise in temperature heats up the shell of hydrogen surrounding the core until it is hot enough to start hydrogen fusion, producing more energy than when it was a main sequence star," the Australia Telescope National Facility says on their website.

Red giant stars reach sizes of 100 million to 1 billion kilometers in diameter (62 million to 621 million miles), 100 to 1,000 times the size of the sun today. Because the energy is spread across a larger area, surface temperatures are actually cooler, reaching only 2,200 to 3,200 degrees Celsius (4,000 to 5,800 degrees Fahrenheit), a little over half as hot as the sun. This temperature change causes stars to shine in the redder part of the spectrum, leading to the name red giant, though they are often more orangish in appearance.