White dwarves have run out of fuel; therefore they have stopped producing energy, through nuclear fusion. Also, they are very small - smaller than planet Earth, while (for comparison) our Sun has 109 times the diameter of Earth; they are very dense (a cubic centimeter of white dwarf matter has a mass of several tons), and fairly hot - though, since they don't produce energy, they will gradually cool down.
No, the sun is a main sequence star, not a white dwarf. White dwarfs are the remnants of smaller stars that have exhausted their nuclear fuel and collapsed. The sun will eventually evolve into a white dwarf in about 5 billion years.
In 5 billion years time, our Sun will turn into a white dwarf.
False. A white dwarf star is much smaller in size compared to the sun. A white dwarf is typically about the size of the Earth, whereas the sun is much larger, around 100 times wider and more massive than a white dwarf star.
A white dwarf is much denser than the Sun. White dwarfs have a typical density around 1 million times greater than the density of the Sun, resulting in a mass similar to the Sun's but packed into a much smaller volume.
It will first become a red giant, then turn into a white dwarf and in billions and billions of years it will become a black dwarf.
white dwarf star
No. In about 7.5 billion years the Sun will become a white dwarf.
No, the sun is a main sequence star, not a white dwarf. White dwarfs are the remnants of smaller stars that have exhausted their nuclear fuel and collapsed. The sun will eventually evolve into a white dwarf in about 5 billion years.
No. It will become a white dwarf in about 7.5 billion years time.
White Dwarf, Sun, Red Giant, Supernova
No, the sun will eventually evolve into a red giant before shedding its outer layers and becoming a white dwarf. The white dwarf stage marks the end of its evolution, where it will slowly cool down over billions of years.
A stars evolution. Our Sun will go yellow dwarf -> red giant -> white dwarf -> black dwarf.
Several times smaller than our Sun. Details vary, depending on the type of dwarf star (a red dwarf and a white dwarf are quite different things), and the exact mass.
A white dwarf
A white dwarf is the death of a medium sized star - similar to our own Sun.
The sun will be a red giant for about 1 billion years before transitioning into a white dwarf.
In 5 billion years time, our Sun will turn into a white dwarf.