* How big is the sun? In this case, the sun is a giant star with a diameter of about 865,000 miles (1.39 million kilometers).
* How big is something compared to the sun? You need to specify what "something" you're comparing to the sun. For example:
* Earth: Earth is much smaller than the sun, with a diameter of about 7,926 miles (12,756 kilometers). The sun is about 109 times wider than Earth.
* Jupiter: Jupiter is the largest planet in our solar system, but it's still much smaller than the sun. Jupiter has a diameter of about 86,881 miles (139,822 kilometers). The sun is about 10 times wider than Jupiter.
* How big is the sun compared to other stars? The sun is a medium-sized star. There are many stars that are much larger and more massive, and also many stars that are smaller and less massive than our sun.
Please provide more information so I can give you a more specific answer.
