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GALAXY UNIVERSE

SUN

Star at the centre of our solar System. It is a around 5 Billion years of age, with an anticipated lifetime of 10 billion years; its distance across is 1.4 million km/865,000 mi; its temperature at the surface  (the photosphere) is around 5,8000 K/5,530’ C/ 9,986’F, and at the middle 15 million K/ around 15 million’s/ around 27 million F. It is made out of about 70% hydrogen and 30% helium, with different components making up under 1%. The Sun’s vitality is created by atomic combination response that transform hydrogen into helium, delivering a lot of light and warmth that continue life on Earth.

sun

Space tests to the Sun have incorporated NASA’s arrangement of Orbiting Solar Observatory stellates, propelled somewhere in the range of 1963 and 1975, the Ulysses space test, propelled in 1990, and Genesis, propelled in 2001. Since 1995 the Sun has been persistently seen by SOHO, a joint European – US satellite forever positioned between the Earth and Sun.

At the end of its life, it will expand to become a red giant the size of Mars’s orbit, then shrink to become a white dwarf. The Sun is about 149 million km from Earth (the closest star to Earth), with light and heat taking about seven minutes to reach Earth. The Sun spins on its axis every 25 days near its equator, but more slowly towards its poles. Ts rotation can be followed by watching the passage of dark sunspots across its disc. Sometimes bright eruptions called flares occur near sunspots.  (Helicon, 2018).