List of amazing facts about the Solar System and its Planets

There are about 100 billion galaxies in the universe and the Milky Way Galaxy is one of it in which our Solar System exists. The Sun is the originator of the Solar System, which eventually is also a star, is the source of light and energy. Here, we are giving the list of amazing facts about the Solar System and its Planets that gives a general awareness to the readers.
Created On: May 25, 2017 18:18 IST
Modified On: May 26, 2017 16:29 IST

The celestial bodies revolves around the Sun, which includes 8 planets, 180 satellites, comets, meteors and asteroids, together constitute the Solar System.

The Sun: Fact at a Glance

The Sun is a star at the centre of the Solar System, which is a perfect sphere of hot plasma that generates a magnetic field through the dynamo process (a naturally occurring electric generator in the Sun's interior, produces electric currents and a magnetic field). The part of the sun that we can see is known as the photosphere. The outer most part of the sun, which visible only at the time of the eclipse is known as corona.

 Sun Anatomy

Source: www.astronomyknowhow.com

1. Minimum distance from the earth (Perihelion):147 million km (January 3)

2. Maximum distance from the earth (Aphelion): 152.1 million km (July 4)

3. Average distance from the earth: 149.8 million km

4. Diameter: 13,92,000 km

5. Volume: 1.3 million times that of the earth

6. Mass: 3,32,000 times that of the earth.

7. Gravity at the surface: 28 times that of the earth

8. Density at the centre: 100 gm/cm3  

9. Temperature of the photosphere: 6000°C

10. Temperature at the centre: 15 million °C

11. Temperature of the Sun-spots: 1500°C

12. Energy dissipation: 1026 joules/second

13. Pressure at the centre: 109 atm.

14. Rotational time period: 25.38 days (relative to the equator); 33 days (relative to the poles).

15. Composition: Hydrogen (71%), Helium (26.5%) and others (2.5%)

16. Age: 5 billion years (approx)

17. Estimated life of normal stars: 10 billion years (approx)

18. Time taken by the light to reach the earth:  8 min 18 sec

19. Velocity of the light — 3 x 108 m/s

20. 1 light year (distance travelled by the light in one year):  9.45 x 10'3 km

21. 1 parsec (largest/biggest unit of distance): 3.6 light years

Our Changing view of the Universe

The Earth: Fact a Glance

The Earth is the third planet from the Sun and the fifth largest planets in the Solar System. It lies between the orbits of Venus and Mars. It rotates on its axis from west to east and is tilted on its axis by 23 ½ degree.

 The Earth

1. Shape: Geoid

2. Pole to pole diameter: 12,714 km

3. Equatorial diameter: 12,756 km

4. Polar perimeter: 40,008 km

5. Equatorial perimeter: 40,075 km

6. Mass: 5.97 x 1024 tonne

7. Water: 71%

8. Land: 29%

9. Volume: 10.83 x 1011 km3

10. Average Relative Density: 5.52 (with respect to the density of water)

11. Age (estimated): 4.6 billion years

12. Surface area: 511 million km2

13. Rotational time: 23 hours 56 min 4 sec

14. Revolution time: 365 days 5 hours 48 min 46 sec

15. Revolution velocity: 29.8 km/sec

16. Length of the orbit: 960 million km

17. Minimum distance from the sun (Perihelion):147.9 million km

18. Maximum distance from the sun (Aphelion): 152.1 million km

19. Average distance from the sun: 149.8 million km

20. Time taken by the light of the sun to reach earth: 8 min 18 see

21. Distance from the moon: 384,000 km

22. Deepest point: Mariana Trench (11,034 m deep from the mean sea level).

Composition and Structure of the Earth

The Moon: Fact at a Glance

The Moon is a celestial body that revolve around the Earth and it is only natural satellite. It is the fifth largest natural satellite in the Solar System.

 Phases-of-the-moon

Source: Wikimedia

1. Average distance from the earth: 3, 84,365 km

2. Maximum distance from the earth (Apogee): 4, 06,000 km

3. Minimum distance from the earth (Perigee): 3,64,000 km

4. Orbital time around the earth: 27 days 7 hours 43 min 11.47 sec

5. Rotational time:  27 days 7 hours 43 min 11.47 sec

6. Atmosphere:  Absent

7. Diameter: 3,476 km

8. Mass (compared to the earth):  1:81.30

9. Density (relative to that of water):3.34

10. Density (relative to that of the earth): 0.6058

11. Hidden part of Moon's surface: 0.41 (41%)

12. Highest point on the Moon: Mt Leibnitz (35,000 ft.) situated on the South Pole of the moon.

Planets according to their size (Decreasing Order)

1. Jupiter

2. Saturn

3. Uranus

4.  Neptune

5. Earth

6. Venus

7. Mars

8. Mercury

Planets according to their mass (Decreasing Order)

1. Jupiter

2. Saturn

3. Uranus

4. Mars

5. Earth

6. Venus

7. Uranus

8. Saturn

Planets according to their density (Decreasing Order)

1.  Earth

2. Mercury

3. Venus

4. Mars

5. Neptune

6. Jupiter

7. Uranus

8. Saturn

Planets according to their revolution period (Decreasing Order)

1. Mercury

2. Venus

3. Earth

4. Mars

5. Jupiter

6. Saturn

7. Uranus

8. Neptune

Planets according to their revolution velocity (Decreasing Order)

1. Mercury

2. Venus

3. Earth

4. Mars

5. Jupiter

6. Saturn

7. Uranus

8. Neptune

Terrestrial Planets

Terrestrial Planets are those planets which are made up of rocks and their structures are being similar to that of the Earth.

1. Mercury

2. Venus

3. Earth

4. Mars

Jovial Planets

Jovial Planets are also called as ‘giant planets’ because their structures are similar to the Jupiter.

1. Jupiter

2. Saturn

3. Uranus

4. Neptune

There are about 100 billion galaxies in the universe and the Milky Way Galaxy is one of it in which our Solar System exists. The Sun is the originator of the Solar System, which eventually is also a star, is the source of light and energy. Hence, in the list of amazing facts about the Solar System and its Planets gives a general awareness to the readers.

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