1. Which star is at the center of our Solar System?
Sun.
2. What is the diameter of Sun?
1,392,684 km (865,374 mi).
3. What percent of the solar system’s mass does Sun holds?
99.8 percent.
4. How many stars are in the Milky Way?
more than 100 billion.
5. When was Sun born?
roughly 4.6 billion years ago.
6. What is the distance between sun and earth?
92,960,000 miles (149,600,000 km).
7. Sun’s Chemical Composition:
71% of Hydrogen, 26.5% Helium and2.5% of other elements.
8. How much time does sun rays take to reach earth?
8 minutes.
9. Which planet isnearest tothe earth?
MERCURY.
10. Which planet is known as the Morning Star or the Evening Star?
VENUS.
11. What is the diameter of MERCURY?
3,032 miles (4,879 km).
