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How Big Is the Sun?

The Sun is composed primarily of hydrogen and helium, making it a dense object. Less dense elements such as carbon, nitrogen and iron account for less than 2% of the Sun’s mass. The Sun’s interior is divided into several layers, including a dense core. This core is about one-quarter the size of Earth’s atmosphere and occupies about twenty-two percent of the Sun’s total radius. anonig

In order to get a better understanding of the sun’s physics, spacecraft have been sent into space to observe its behavior. The first of these spacecraft was the Pioneer 5/6/7/8/9 satellite, which orbited the Sun at similar distances to Earth. This mission was the first to record detailed measurements of the solar wind and solar magnetic field. This data helped scientists determine what kind of energy the Sun puts out.

The Sun formed from a fragment of a giant molecular cloud that consisted primarily of hydrogen and helium. This cloud gave birth to many other stars, but it’s not certain which ones formed in this stellar mass. After the cloud collapsed, this fragment of the cloud began to rotate, heating up as it did. The Sun is now the most massive object in our solar system. tinyzonetv

The Sun occupies ninety-nine percent of our solar system. Because the Sun is so big, it creates magnetic field lines that interact with the plasma on its surface. These magnetic field lines cause sunspots – cooler, darker areas that appear for a few months. These spots are created when magnetic field lines penetrate the photosphere. Sunspots appear in cycles and vary in size.

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