The Solar System

What is the sun's core?
Answered by Science Channel
  • Science Channel

    Science Channel

  1. The sun's core encompasses one-quarter of its entire radius and produces 100 percent of its total energy output. The sun's gravity is most concentrated in the core; here, the gravity pulls all the gases and materials that make up the sun's mass inward. As a result, the core is extremely hot, with temperatures greater than 15 million degrees Kelvin. The core is also under immense pressure. This pressure is so high that the hydrogen atoms fuse together, creating nuclear fusion reactions and various forms of energy and light as a result. The different types of light emitted from the sun include ultraviolet light, X-rays, visible light, infrared, microwaves and radio waves.

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Still Curious?
  • How do planets move?

    Answered by Martha Barksdale and Science Channel

  • What makes Venus the hottest planet?

    Answered by Science Channel

  • What's wrong with Mars' core?

    Answered by Science Channel


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