How cold is the water at the bottom of the ocean? Space is just above that, at an average temperature of 2.7 Kelvin ( about minus 455 degrees Fahrenheit). If atoms come to a complete stop, they are at absolute zero. The Kelvin scale is based on molecular motion, with the temperature of 0 K, also known as absolute zero, being the point where all molecular motion ceases. The Celsius scale sets the freezing point and boiling point of water at 0☌ and 100☌ respectively. The corona is 10 − 12 times as dense as the photosphere, and so produces about one-millionth as much visible light. The Sun’s corona is much hotter (by a factor from 150 to 450) than the visible surface of the Sun: the photosphere’s average temperature is around 5800kelvin compared to the corona’s 1 to 3 million kelvin. How hot is the corona of the Sun in Kelvin? These layers can only be seen during total solar eclipses. The outermost atmospheric layer is the corona, which gets really hot, almost 2,000,000 degrees F. Gases in this layer shine in the ultraviolet and extreme ultraviolet wavelengths. The solid iron core is actually crystalline, surrounded by liquid. New measurements suggest the Earth’s inner core is far hotter than prior experiments suggested, putting it at 6,000C – as hot as the Sun’s surface. When the sun goes down, temperatures can dip to minus 280 F (minus 173 C). When sunlight hits the moon’s surface, the temperature can reach 260 degrees Fahrenheit (127 degrees Celsius). … The answer is that temperature is a measure of the average kinetic energy of the gas atoms, that is, a measure of how fast they are moving. “The fact that the outermost region of the sun’s atmosphere is at millions of degrees while the temperature of the underlying photosphere is only 6,000 kelvins (degrees C.
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