The biggest star in OUR Solar System is the Sun... Yes, the big hot orange, yellow and red thing that gives our Earth light.
This is a yellow super-giant star, around 800 light-years from our solar system.
it would depend if the star was a red giant or a super red giant and if it is 1000X larger than a red giant then it would turn into a black hole. some people think that the star at the center of the galxy is a black hole (but don't woury the solar system is at the rim of the galixy)
There are no red giants or any other star besides the Sun in the solar system.
The Sun will become a "Red Giant" star. This will engulf some of the inner planets and heat up the whole Solar System. Eventually the giant star will "die", leaving behind a "White Dwarf" star.
The giant star
The gas giant Saturn is located in the solar system orbiting the star Sol, sometimes referred to as the "Terran System."
the SUN
Pluto was found to be a giant star, by some very smart Astrologists/Scientists. Pluto is not the 9th known planet of our solar system.
Hypergiant.
The giant ball of nuclear fusion at the centre of the solar system, the star known as the sun.
super giants are a very very big star
A Super Nova.