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Blue stars are the hottest whilst black dwarfs are the coldest.
(However, no black dwarfs exist yet - see related question)
The stellar classification [See link] in order of temperature. Our Sun is classed as yellow.
- Blue > 30,000 Kelvin
- Blue to blue white 10,000 -> 30,000 Kelvin
- White 7,500 -> 10,000 Kelvin
- Yellowish White 6,000 -> 7,500 Kelvin
- Yellow 5,200 -> 6,000 Kelvin
- Orange 3,700 -> 5,200 Kelvin
- Red 1,000 < 3,700 Kelvin
- Brown < 1,000 Kelvin
- Black 0 Kelvin
See link [Kelvin] for conversion ratios.
See link to [Stellar classification]
Hottest Internal Temperature
However, the "hottest" star in the universe is a neutron star, based on its internal heat, which it does not radiate effectively into space. The temperature inside a newly-formed neutron star is around 1000 billion Kelvins. However, the neutrinos that it emits (in massive numbers)carry away so much energy that the temperature falls within a few years to around 1 million kelvins. Most of the radiation generated by a neutron star is X-rays. In visible light, neutron stars probably radiate approximately the same energy in all parts of the visible spectrum, and therefore would appear white.
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Layers of the sun in order from coolest to hottest?
The layers of the sun in order from coolest to hottest are the photosphere (surface layer), the chromosphere, and the corona. The core is the hottest region of the sun.
What are the five possible colors of a star?
The five possible colors of a star are blue, white, yellow, orange, and red. These colors correspond to different temperature ranges of stars, with blue being the hottest and red being the coolest.
What color of the massive star?
Massive stars can appear in a range of colors depending on their surface temperature. They can range from blue (hottest) to white, yellow, orange, and red (coolest). The color of a massive star can provide clues about its temperature and stage of life.
What is the hottest star in the solar system?
The hottest star in the solar system is our Sun, which has a temperature of about 15 million degrees Celsius at its core. No other star in our solar system comes close to matching the Sun's surface temperature.
What color star is hotter a red star of a blue star?
A blue star is hotter than a red star. Blue stars have higher surface temperatures, typically exceeding 10,000 Kelvin, while red stars have lower surface temperatures, usually below 4,000 Kelvin. The color of a star is an indication of its temperature, with blue stars being the hottest and red stars being the coolest.
