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Bookmark or Share- The Sun: Facts, size, and fate of Earth’s blazing starOur Sun is a middle-aged star, approximately 4.6 billion years old. It formed from the gravitational collapse of a region within a large molecular cloud primarily composed of hydrogen and...
- The Sun - Science@NASAThe Sun is the star at the heart of our solar system. Its gravity holds the solar system together, keeping everything – from the biggest planets to the smallest bits of debris – in its orbit.
- Stars - NASA ScienceAstronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun.
- Our Sun: Facts - Science@NASAOur Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star.
- Sun - WikipediaThe Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
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