Q:

How big is the sun?

A:

The sun's mass is estimated to be 1.989 times 10E30 kilograms, about the equivalent of 333,000 Earths, and has a diameter of about 864,938 miles. About 99.8 percent of the entire mass of the solar system is contained within the sun.

The sun is a relatively small star in the Milky Way Galaxy. It is classified as a yellow dwarf star, also called a G dwarf star, and it is one of about 10 billion similar stars in the galaxy. Red giant stars, such as Betelgeuse, are much more voluminous.

Astronomers think that in about 5 billion years, the sun will use up all its hydrogen and become a red giant itself. This transformation will destroy all the inner solar system planets, including the Earth.


Is this answer helpful?

Similar Questions

  • Q:

    What is the diameter of the Sun?

    A:

    The diameter of the sun is approximately 864,938 miles, though there is a slight difference between its polar and equatorial diameters. As the sun is nearly in the shape of a perfect sphere, this diameter difference is only about 6.2 miles.

    Full Answer >
    Filed Under:
  • Q:

    Where does the sun set?

    A:

    The sun appears to set when it vanishes over the western horizon as the Earth rotates away from the sun. Depending on the Earth's tilt at a particular time of year, the sun sets either slightly north or south of due west.

    Full Answer >
    Filed Under:
  • Q:

    How long does it take the sun to set once it touches the horizon?

    A:

    Once the sun touches the horizon, it takes approximately 2 to 3 minutes to go below the horizon. This is dependent on several factors, including latitude, time of year and atmospheric thickness.

    Full Answer >
    Filed Under:
  • Q:

    How did the sun form?

    A:

    The sun formed from a collection of gas and dust that pulled together by mass gravitation; the extreme pressure caused by this great mass produced a nuclear fission reaction that fueled the sun and continues to keeps it burning. The primary elements that make up the sun are hydrogen and helium. Scientists theorize that the shock wave from a large supernova drew together the dust particles that became the sun.

    Full Answer >
    Filed Under:

Explore