Why are stars hotter than the sun?

Why are stars hotter than the sun?

The stars which are several times bigger than our sun may turn into supernovae. Supernovae are stars that contract so much that they eventually explode. They may reach temperatures of 3 billion degrees Celsius (that’s 300 times hotter than the sun) right before they explode (Dickin, 2005).

Are stars hotter than the sun?

But 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.

Why is the sun’s atmosphere so hot?

At the surface of the sun, the magnetic field lines look like many loops rising up out of the surface into the atmosphere — and these loops are changing all the time. If the loops touch each other they can cause sudden explosions of enormous amounts of energy that heat up the atmosphere.

Is there anything hotter than sun?

In terms of temperature, which of the following is hottest? And the answer: lightning. According to NASA, lightning is four times hotter than the surface of the sun. The air around a stroke of lightning can peak at 50,000 degrees Fahrenheit, while the surface of the sun is around 11,000 degrees.

Why is the Sun not hot?

The answer is that the sun is the ultimate source of heat in our solar system, so if you are not in sunlight, and there is no air or ground (or portable heater) to carry sunlight’s energy to you, then you have no source of heat.

What causes the sun to be so hot?

When our sun burst into creation, it was a mass of swirling gases that included a core or center that is compressing atoms together in a process called ‘nuclear fusion’. This intense pressure creates heat at temperatures that are around 15 million degrees C.

What makes a star get hot before nuclear fusion?

Nuclear fusion actually stops a star getting hotter. Protostars (before nuclear fusion) get hot because of a well known statistical relationship between the gravitational potential energy of a gas and the internal kinetic energy of the particles that make up the gas.

Why are stars so hot in the night sky?

Stars undergo gravitational contraction because they were initially a big cloud of gas. Therefore, the final answer as to why stars are hot is…. [math]\\displaystyle \extbf{Stars are hot because stars are big!} \ag*{}[/math] *Or centigrade.

What makes the Sun look like a star?

Stars are actually suns, in the same way that our sun is a star. If you went out into the far reaches of the galaxy and looked back on our sun, it would look like a star. To figure out why the stars shine, you have to know what they are made of. Stars are balls of glowing plasma, so hot that we can’t even imagine the temperatures.