The Sun is a G-type main-sequence star (G2V) but is informally known as a yellow dwarf star. Composed of 73% hydrogen and 25% helium, the hot plasma that makes up the Sun reaches 9,900°F (5,505°C) at the surface. It formed approximately 4.6 billion years ago and makes up 99.86% of the mass in the solar system.
Which of the following is not a characteristic of the Sun?
is composed of hydrogen and helium |
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formed 2.6 billion years ago |
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makes up over 99% of the mass of the solar system |
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is a yellow dwarf star |