The idea of which is the largest known star in our universe is constantly up for debate as tools for measuring get better and better. As of right now, the general consensus is the UY Scuti is the biggest star in the observable universe, with a radius that is approximately 1,708 times larger than our own sun.
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The sun is a star itself, it is the only star shown in day.The other stars are always there but we can't see them in day because the sun (the biggest star) is much bigger and so much more brighter.
It is the Stephenson 2-18. It had a diameter that is 2150 times of the sun. Its type is one of the biggest star which a Red Hypergiant.
The second biggest star in space is UY Scuti, a red supergiant located in the constellation Scutum. It is one of the largest known stars in the universe, with a radius that is over 1,700 times larger than the Sun.
The sun is neither the smallest or the biggest star. Our sun is medium sized star.
Polaris is the brightest star in Ursa minor but that does not necessarily mean that it is the biggest.
Jupiter does not have any stars surrounding it. Jupiter is a planet in our solar system and is not a star itself. It is surrounded by its moons and the vastness of space.
The biggest star in the Milky Way is currently believed to be UY Scuti, a red supergiant star located in the constellation Scutum. It is estimated to be over 1,700 times larger than the Sun in terms of volume.