" The hottest known stars in the Universe are the blue hypergiant stars. These are stars with more than 100 times the mass of the Sun. One of the best known examples is Eta Carinae, located about 7,500 light-years from the Sun. Eta Carinae could be as large as 180 times the radius of the Sun, and its surface temperature is 36,000-40,000 Kelvin "TheGmGoken wrote:But the sun isn't the hottest thing in the universe. Hell a lighting bolt is hotter.
" The surface of the Sun is 5,778 Kelvin or about 5,500 oC
The core of the Sun is about 15,700,000 Kelvin or 15,700,000 oC
A lightning bolt is about 30,000 oC so hotter than the surface of the Sun.
A quasar is probably the hottest thing around, where the brightest ones
consume about 100 Suns per year "
" Our sun is very hot, but not as much as some other stars. The surface temperature of our sun is around 5500 to 6000 degrees Kelvin, about the same in °C. The inner core temperature is around 14.5 million degrees Kelvin. Blue stars are much hotter, with surface temperatures of blue hyper giant stars up to 40,000 degrees Kelvin and core temperatures of several million Kelvin.
Dying Stars can be very hot at the core, as they go through the last stages of life, fusing heavier and heavier atoms. In the final stages, some super massive red hyper giants can be undergoing silicon fusion, where temperatures are up to 2,700,000,000 (2.7 billion) Kelvin. During a supernova explosion, core temperatures can reach 100 billion Kelvin "
