Stars
Sun
The star at the center of our Solar System
About Sun
The Sun is a yellow dwarf star at the center of our Solar System. It provides energy for all life on Earth and drives our climate and weather.
Scientific Facts
The Sun has a diameter of 1,391,000 km. Its surface temperature is 5,500°C and its core temperature reaches 15 million°C. It is 4.6 billion years old.
Interesting Facts
The Sun contains 99.86% of all mass in the Solar System. It converts 600 million tons of hydrogen into helium every second.
Fun Facts
The Sun is actually white but appears yellow through our atmosphere. One million Earths could fit inside the Sun.
Discovery
Known since ancient times; studied by Galileo with telescope in 1610.