What is the is the hottest star?
The hottest star has possibly exploded and formed a black hole.
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The hottest stars are those that appear bluish, such as Sirius. Cygnus OB2-12 is a very bright blue hypergiant that lies between 5,000-6,000 light-years from Earth. It is …with an absolute magnitude of -12.2. It is more than 6 million times brighter than the Sun, and among the most luminous stars known in the Galaxy. The hottest star visible to the naked eye is Theta Orionis C, one of the stars illuminating the Orion nebula. It has a surface temperature of about 45,000 K. Even hotter is a star going by the rather unmemorable name of HD 93129A; which is about 7,500 light-years away. Its surface temperature is around 50,000 K. However, it's quite distant and thus can't be seen without a telescope. Over a short period of time, the Neutron Star burns at a temperature of over 1 billion degrees kelvin. However, the huge number of neutrinos it emits carries away so much energy that the temperature falls within a few years to around 1 million kelvins. For comparison, the Sun's surface temperature is about 6000 K.
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blue stars are the hottes star out here and then white and so on
The blue ones (which are actually hotter than the white). See: http://www.astronomynotes.com/starprop/s12.htm for a list of colors and temperature. ---- The hottest star …in the universe is the Neutron Star burning on creation at a temperature of over 1 billion degrees kelvin . However, the huge number of neutrinos it emits carries away so much energy that the temperature falls within a few years to around 1 million kelvins. It would appear white to the eye. The next hottest are O type stars (aka Blue Giants ) which have a temperature of greater than 30,000 kelvin and will have a colour of, as the name suggests, blue!
Greyson chance and Taylor lautner everybody knows that!
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Blue Stars are rated the hottest from a range of 7,500 degrees kelvin to over 25,000 degrees kelvin. Our own modest sun only puts out 5-6000 degrees Kelvin.
Ironically the blue stars are the hottest considering blue is usually a "cool" color.
The hottest Stars are the blue hyper giants, stars with masses greater than 100 times our own suns mass. The light they emit is at the blue end of the spectrum. R136a1 is a go…od candidate for the hottest known star, estimated to have a surface temperature of around 50,000 degrees Kelvin.
if you mean surface temperature then the second hottest is "B" with surface temp of 10,000- 30,000 K
More mass means more gravity, therefore the mass gets packed closer together, causing more pressure. This facilitates nuclear reactions.
Red stars are the coolest. They are usually between 3,000-6,000 degrees Fahrenheit. They include Proxima Centauri (4.2 light-years from Earth) and Betelgeuse (350-650 light-ye…ars from Earth). The cooler and smaller the star, the longer it lives. Blue stars are the hottest, but the LBV types, such as Eta Carinae (7,500 light-years from Earth) and R136a1 (163,000 light-years from Earth) are the hottest and heaviest in the universe. They could range temperatures from 50,000-100,000 degrees Fahrenheit.
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