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--- sun [2021/03/12 03:45]
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+++ sun [2022/12/15 02:16] (current)
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 ==== Atmosphere ====
 The sun has an atmosphere. It consists of a temperature minimum layer, chromosphere, transition layer, solar corona, and heliosphere. [([[https://www.space.com/17160-sun-atmosphere.html|Space]])]
+==== Center of the Solar System ====
+The Sun is a star located at the center of the solar system. [([[https://solarsystem.nasa.gov/solar-system/sun/overview/|Solar System]])]
+==== Largest object ====
+It is the largest object in the solar system, making up about 99.8% of the total mass of the solar system. [([[https://www.space.com/58-the-sun-formation-facts-and-characteristics.html|Space]])]
+==== Photosphere ====
+The surface of the Sun, known as the photosphere, has an average temperature of about 5,500 degrees Celsius (9,932 degrees Fahrenheit). [([[https://scied.ucar.edu/learning-zone/sun-space-weather/sun-photosphere|University Corporation for Atmospheric Research]])]
+==== Burning hydrogen ====
+The Sun is a main-sequence star, meaning it is in the stage of its life in which it is burning hydrogen to create helium in its core. [([[https://www.atnf.csiro.au/outreach/education/senior/astrophysics/stellarevolution_mainsequence.html|Australia Telescope National Facility]])]
+==== 93 million miles from Earth ====
+The Sun is located about 150 million kilometers (93 million miles) from Earth. [([[https://coolcosmos.ipac.caltech.edu/ask/8-How-far-away-is-the-Sun-|Cool Cosmos]])]
+==== Gravitational pull ====
+The Sun's gravitational pull is what keeps all the planets in orbit around it. [([[https://www.lpi.usra.edu/education/explore/solar_system/activities/bigKid/planetPull/|Lunar and Planetary Institute]])]
+==== Electromagnetic radiation ====
+The Sun produces light, heat, and other forms of electromagnetic radiation, which are essential for life on Earth. [([[https://education.nationalgeographic.org/resource/solar-energy|National Geographic]])]
+==== The closest star ====
+The Sun is the closest star to Earth, making it the most studied star in the universe. [([[https://skyandtelescope.org/astronomy-resources/far-closest-star/|Sky and Telescope]])]
+==== Out of fuel ====
+The Sun will eventually run out of fuel and expand into a red giant, before eventually collapsing into a white dwarf. [([[https://astronomy.com/magazine/ask-astro/2020/09/what-will-happen-to-the-planets-when-the-sun-becomes-a-red-giant|Astronomy]])]
+{{tag>astronomy science}}

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