Table of Contents
Why are stars hotter than the sun?
The hottest stars have surface temperatures of 50,000 Kelvin degrees. The Sun surface is only 5800 Kelvin degrees, which means that there are hotter starts than the Sun.
Are a stars the hottest?
In general, a star’s temperature determines its color, from red to blue-white. Spectral types are named with a letter. 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.
What produces heat in a star?
Stars generate energy through nuclear fusion. Here’s an easy explanation about how the process works. Stars spend most of their lives repetitively compressing two hydrogen atoms into a single helium atom – plus a lot of energy, which is released as light and heat.
What does a hotter star mean?
The color of a star is a function of its temperature. If a star looks red, that means its surface temperature is approximately 2,500 Kelvin. Just for comparison, our Sun, which actually looks white from space, measures about 6,000 Kelvin. The hotter the star, the further up the spectrum you go.
What is hottest thing in the universe?
The hottest thing in the Universe: Supernova The temperatures at the core during the explosion soar up to 100 billion degrees Celsius, 6000 times the temperature of the Sun’s core. That is 360,000 times the temperature at the Sun’s core!
What keeps them shining so bright?
The simple answer is that deep inside the core of the Sun, enough protons can collide into each other with enough speed that they stick together to form a helium nucleus and generate a tremendous amount of energy at the same time. This process is called nuclear fusion.
Are hotter stars the brightest?
Explanation: Bright main sequence stars tend to be larger and hotter. Some of the brightest stars, such as Sirius and Rigel have surface temperatures of 10,000K or more. Betelgeuse on the other hand is a bright red giant with a surface temperature of less than 4,000K.