Sun is situated in the center point of the Solar System. Planets, asteroids, and other planetary objects that are formed from the Sun are orbiting Sun for billions of years. Sun is the main source of energy for life on Earth. But there are more interesting facts about the Sun can be found bellow.
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|Age||≈ 4.6 billion years|
|Mean distance from Earth||1 au ≈ 1.496×108 km|
|Time taken by sunlight to reach Earth||Saturn|
|Mean distance from Milky Way||27200 light years|
|Equatorial radius||695700 km|
|Equatorial circumference||4.379×106 km|
|Volume||1.41 x 1018 km3|
|Mass||1.9884 x 1030 kg|
|Average Density||1.408 g/cm3|
|Center Density||162.2 g/cm3|
|Equatorial surface gravity||274 m/s2|
|Average orbital speed||5.57 km/s|
|Temperature||1.57×1070 K(center), 5772 K (Photosphere), ≈ 5×106 K (Corona)|
|Sidereal rotation period (equator)||25.05 d|
|Rotation Velocity||7.189 x 103 km/h|
|Composition (Photosphere)||Hydrozen(73.6%), Helium (24.85%), Oxygen(0.77%), Carbon (0.29%), Iron, Neon, Nitrogen,Silicon, Magnesium, Sulphur|
1. The reason behind Sun’s brightness is its high temperature. Due to nuclear fusion, Hydrogen converted into Helium and thus how high-temperature form.
2. Because of the gravity despite the high temperature and regular blasts, the Sun remains intact.
3. The Equatorial Surface gravity of the Sun is 28 times the Earth.
4. The surface area of the Sun is 12000 times of Earth.
5. Sun’s volume is 1300000 times of Earth’s volume.
6. The total mass of the Sun is 1.9884 x 1030 kg, which is 333000 times of the Earth’s mass.
7. The study of the interior part of the Sun is Helioseismology.
8. One of the most important Solar mission to date is Solar and Heliospheric Observatory (SOHO). SOHO was developed by NASA and ESA jointly. It was launched on 2nd December 1995 from Cape Carnival LC-36B and placed into the Lagrangian point between Sun and the Earth.
9. Indian Space Research Organization (ISRO) also planning to launch its first mission Aditya to study the Sun.
10. Parker Solar Probe was launched in 2018 and it will reach the nearest part of the Sun’s corona. It will be the first spacecraft that will make its flyby nearest to the solar corona by 2025.
11. If anyone looks directly at the Sun, the high solar lights can result in partial blindness to phosphene visual artifacts.
12. A geomagnetic storm creates disturbances onto the Earth’s magnetic field is happened due to the Sun.
13. Ultraviolet rays of the Sun observed by the Earth’s Ozone layer.
14. The Sun contains 99.85% of the total mass of the solar system. That’s the reason why scientists believe that planets, asteroids, and their moons are created from Sun.
15. Sun is almost spherical because there is only a 10-kilometer difference between polar and the equatorial diameter of the Sun.
16. Sun takes 225 to 250 million years to orbit the center of the Milky Way galaxy. And it is 25000-28000 light-years away from the Galactic Center.
17. The galactic habital zone is the region where Sun and the Solar system is found.
18. The Solar winds are originally charged particles that spread all over the Sun at the speed of 400-450 km/s.
19. Sun is a G-type main-sequence star, is a Yellow Dwarf.
20. In near a few billion years the nuclear fusion of the Sun will stop. After that, it will become as large as to engulf Mercury and Venus and will become a white dwarf.
21. Ancient Sumerians believed Sun as their god Utu.
22. In Ancient Egypt, Sun was worshiped as a god Ra.
23. As per Aztecs, their god of the Sun was Tonatiuh.
24. According to a Japanese religion Shinto, the worshiped a goddess named Amaterasu.
25. A Greek Philosopher Aristarchus was the first person to claim that the Earth is orbiting around the Sun.
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