What do you mean by "biggest"? That it looks brightest? That its real brightness is the greatest? That it has the largest diameter? The greatest mass?
The star that looks brightest for us is Sirius. Planets, however, also look like stars, and some of them look brighter than Sirius, including Venus, Jupiter, and sometimes Mars.
There are no stars in the Earth. For the biggest star in the Universe, see the related question.
The star Sirius is the brightest star visible from the earth. Sirius is in the Canis Major constelation, and is therefore often refered to as "the Dog Star"
sun is the closest star to earth .
The brightest star as seen from Earth is the sun. The brightest star in the night sky is Sirius.
we know that the star that earth orbits is the sun the sun is the biggest star ever
The sun is considered a star so the sun is the closest star from earth. Our sun is a star, and it is closer than any other star. However, if you mean "apart from the Sun" the answer is "Proxima Centauri".
The sun is the biggest star in space. This star is so big that we can see it from Earth. Without it we would be living in darkness.
It isn't. The sun isn't the biggest star at all, it's just closest to earth.
Sirius
The photosphere.
Apparent
it is the nearest star to the earth apart from the sun