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All the stars, including our Sun, are gigantic balls of superheated gas, kept hot by atomic reactions in their centers. In our Sun, this atomic reaction is hydrogen fusion: four hydrogen atoms are combined to form one helium atom. The temperature at the core of our Sun is thought to be 36,000,000°F, or about 20,000,000°C, and the surface temperature averages 11,000°F, or about 6,000°C. The diameter of the Sun is 865,400 mi, and its surface area is approximately 12,000 times that of Earth. Compared with other stars, our Sun is just a bit below average in size and temperature, and is a yellow dwarf star. It is 4.5 billion years old, and its fuel supply (hydrogen) is estimated to be sufficient for another 5 billion years.
The Solar System
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Neptune
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TrendingHere are the facts and trivia that people are buzzing about.
Did Birds Evolve from Dinosaurs?
The Twelve Dancing Princesses
Current Events This Week: January 2023
African Americans by the Numbers
Andersen’s Fairy Tales: Contents
The Celtic Twilight: A Teller of Tales
TrendingHere are the facts and trivia that people are buzzing about.
Did Birds Evolve from Dinosaurs?
The Twelve Dancing Princesses
Current Events This Week: January 2023
African Americans by the Numbers
Andersen’s Fairy Tales: Contents
The Celtic Twilight: A Teller of Tales
- Did Birds Evolve from Dinosaurs?
- The Twelve Dancing Princesses
- Current Events This Week: January 2023
- African Americans by the Numbers
- Andersen’s Fairy Tales: Contents
- The Celtic Twilight: A Teller of Tales
