First a red giant, then a white dwarf and finally after billions of years a black dwarf.
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When the sun runs out of fuel it is expected to turn into a red supergiant engulfing earth. Then it is supposed to shrink into a white dwarf.
It will turn into a Red Giant and then its corona expands and disintegrates all of the Rocky Planets.
we would die
a dwarf star
The Sun will turn into a red giant in about 4.5 billion years time.After another billion years it will turn into a white dwarf.
none it runs from the sun
Billions
Such a star will first have a supernova explosion, due to instability in the nucleus. Then it will most likely turn into a black hole.
When the sun runs out of fuel for fusion, it will expand into a red giant star and eventually shed its outer layers to form a planetary nebula. The core that remains will cool down and contract into a dense white dwarf star.
At first, the sun will soon run out of its primary fuel, hydrogen. This will cause the sun's layers to expand, becoming a red giant. This will likely happen in 5 billion years. While scientists are unsure whether the expanded the sun will engulf the Earth or not, it will likely end life on Earth nonetheless.After it runs out of all fuel, including the heavier elements, it will begin shedding its outer layers and become a planetary nebula. Life on Earth would've almost certainly ceased by then.
It is because it collapses after it has run out of "fuel".
When the sun starts to burn off all of its fuel, however, it will start to lose its mass. The sun will then start to expand into a red giant. After this phase, the remaining part will shrink and become a white dwarf, which is about Earth's size but a million times denser and very hot. The expanded part of the sun will be released into space, creating a planetary nebula, which is basically an enormous ball of gas.