A very long time. Billions of years
When the sun becomes a red giant, it will expand to about 100 times its current size.
Red Giant/Supergiant, it will expand and atomise the Earth
Our Sun will eventually become a red giant, not a red supergiant. As it exhausts its hydrogen fuel in about 5 billion years, it will expand and cool, turning into a red giant. A red supergiant, on the other hand, is a larger star that has significantly more mass than the Sun and undergoes a different evolutionary path.
It will expand and become a red giant
It will expand and become a red giant.
It will expand and become a red giant.
It will indeed expand to a red giant in about 5 billion years. It will then subsequently collapse to a white then brown dwarf star.
It is 0. The sun will eventually expand into a red giant and "swallow" the earth but that is not the same as crashing into it.
The sun's red giant stage will last for 1 or 2 billion years.
It will expand and become a red giant.
It is likely that the Sun will expand to the point where it engulfs Mars when it becomes a red giant in about 5 billion years. At that stage, the Sun will have exhausted its hydrogen fuel and will start burning helium, causing it to expand and consume Mercury, Venus, and eventually Mars.
The sun will become a red giant in about 5 billion years when it exhausts its core hydrogen fuel and starts burning helium in the core. This process will cause the outer layers of the sun to expand and cool, giving it a red giant appearance.