Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all.
There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M. O and B are uncommon, very hot and bright. M stars are more common, cooler and dim.
The brightest of the stars found here are more than 8,000,000 times as luminous as our Sun. And yet, these stars only achieve temperatures of up to ~50,000 K, with white dwarfs, Wolf-Rayet stars, and neutron stars all getting hotter. The highest stellar temperatures, however, are achieved by Wolf-Rayet stars.
Our Sun is by no means the hottest star. That accolade goes to the star WR 102, which is found in the constellation of Sagittarius and has a surface temperature of over 200,000ºC.
The seven main types are M, K, G, F, A, B and O. M stars are the coldest stars and O stars are the hottest. The full system contains other types that are hard to find: W, R, N, and S.
F-type stars are yellow-white, reach 6,000–7,400 K, and display many spectral lines caused by metals. The Sun is a class G star; these are yellow, with surface temperatures of 5,000–6,000 K.
The surface temperatures of A-type stars range from 7,400 K to about 10,000 K; lines of hydrogen are prominent, and these stars are white.
Is lava hotter than the Sun? While lava is still intensely hot, it is not hotter than the Sun. On average, lava can range between 1,300 to 2,200 degrees Fahrenheit, depending on its location. It's safe to say the sun at all parts is much hotter than lava.
A supernova is the hottest thing in the universe. The temperatures at the core during an explosion skyrocket up to 6000X the temperature of the sun's core.
The temperatures reached in 2012 through the Large Hadron Collider experiment reached a staggering 5 trillion degrees Kelvin / 7.2 trillion degrees Fahrenheit, which is hotter than a supernova. This artificially created temperature still holds even today the biggest record for the hottest thing ever created on Earth.
A supernova can light the sky up for weeks. The temperature in a supernova can reach 1,000,000,000 degrees Celsius. This high temperature can lead to the production of new elements which may appear in the new nebula that results after the supernova explosion.
Green and purple stars do exist. The color of stars depends on their temperatures, and they emit radiation throughout the visible spectrum.
With a dayside temperature of more than 7,800 degrees Fahrenheit (4,600 Kelvin), KELT-9b is a planet that is hotter than most stars.
An F-type main-sequence star (F V) is a main-sequence, hydrogen-fusing star of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass of the Sun and surface temperatures between 6,000 and 7,600 K.
The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K.
Owing their names to their colors and diminutive sizes, red dwarfs are barely bigger than Jupiter, burning through their fuel slowly thanks to their lower masses and gravities.
SUPERNOVA: Much more brilliant than a nova, a supernova can shine brighter than an entire galaxy for a brief time.
A hypernova — sometimes called a collapsar — is a particularly energetic core-collapse supernova. Scientists think a hypernova occurs when stars more than 30 times the mass of the Sun quickly collapse into a black hole. The resulting explosion is 10 to 100 times more powerful than a supernova.
A hypernova (alternatively called a collapsar) is a very energetic supernova thought to result from an extreme core-collapse scenario. In this case a massive star (>30 solar masses) collapses to form a rotating black hole emitting twin energetic jets and surrounded by an accretion disk.
What's the hottest thing on Earth? Many people immediately think of lava, the hot, molten rock that occasionally flows from volcanoes. Lava is indeed very hot, reaching temperatures of 2,200° F or more. But even lava can't hold a candle to the sun!
That led to the conclusion that the temperature of the center of the Earth is about 6000 degrees Celsius - a temperature about 9% higher than what exists on the surface of the Sun.
The highest temperature ever reached under controlled conditions is an astonishing two billion degrees. It was created in the so-called Z-machine at the Sandia Laboratories, New Mexico, which uses incredibly high electric currents and magnetic fields to release radiation from atoms.
Because these stars' energy is spread across such a large area, their surface temperatures are actually relatively cool, reaching only 4,000 to 5,800 degrees Fahrenheit (2,200 to 3,200 degrees Celsius), a little over half as hot as the sun.
Surface temperature is low, below 600K, even as low as 5 degrees kelvin. It emits no visible light, only a very faint infrared radiation, So, it cannot support light or heat an orbiting planet. Because of its small size and high mass, its density is very high, over 1 million times that of the Sun.