Solar System
太陽系
P.6 2nd Term General Studies Syllabus
Produced by：Thomas CHAI Yan Piau
Nebula
Nebulae
The Solar System
consists of：
The Sun
The Planets moving around the Sun
The Satellites of the Planets
Asteroids
Comets
Meteors & Meteoroids
And Others ．．．．．
Touring the Solar System
Sun
Mercury
Neptune
Venus
Earth
Moon
Mars
Jupiter
Saturn
Uranus
Pluto
Asteroids and
Comets etc.
Our Place in
the Universe
太陽系的行星探索
柯氏太陽系
Quit
The Heart of the Solar System
Sun (太陽)
The Sun is the closest star to Earth and is the
center of our solar system. A giant, spinning
ball of very hot gas, the Sun is fueled by
nuclear fusion reactions. The light from the
Sun heats our world and makes life possible.
The Sun is also an active star that displays
sunspots, solar flares, erupting
prominences, and coronal mass ejections.
These phenomena impact our near-Earth
space environment and determine our "space
weather."
The Sun (太陽)
Average Diameter
Mass (Earth = 1)
Density (water = 1)
1 390 000 km
333 000
1.41
Moves Around
The Centre of
the Milky Way
Revolution Radius
Revolution Period
Rotation Period
3 1017 km
200 000 000 years
25.4 days
Corona Animation
Solar Eruption
The Nine Planets：
(1) Mercury (水星)
Average Diameter
4880 km
Mass (Earth = 1)
0.0553
Density (water = 1)
5.43
Revolution Radius
Revolution Period
Rotation Period
Number of Satellites
57 900 000 km
88 days
58.7 days
0
Early Formation of Mercury
Final Stage in Mercury Formation
The Nine Planets：
(2) Venus (金星)
Average Diameter
12 100 km
Mass (Earth = 1)
0.815
Density (water = 1)
5.2
Revolution Radius
Revolution Period
Rotation Period
Number of Satellites
108 000 000 km
225 days
243 days
0
The Nine Planets：
(3) Earth (地球)
Average Diameter
12 700 km
Mass (Earth = 1)
5.9761024 kg
Density (water = 1)
5.52
Revolution Radius
150 000 000 km
Revolution Period
365 days (1 year)
Rotation Period
0.997 day
Number of Satellites
1
The Earth’s Only Satellite：
Moon
(月球)
Average Diameter
3 480 km
Mass (Earth = 1)
0.0123
Density (water = 1)
3.34
Revolution Radius
384 000 km
Revolution Period
27.3 days
Rotation Period
27.3 days
Apollo 16 landing on The Moon
Historical Moment --First Men on The Moon
The Nine Planets：
(4) Mars (火星)
Average Diameter
6 780 km
Mass (Earth = 1)
0.107
Density (water = 1)
3.93
Revolution Radius
228 000 000 km
Revolution Period
687 days (1.88 yrs)
Rotation Period
1.03 days
Number of Satellites
2
The Nine Planets：
(5) Jupiter (木星)
Average Diameter
140 000 km
Mass (Earth = 1)
318
Density (water = 1)
1.33
Revolution Radius
Revolution Period
778 000 000 km
4330 days (11.9 yrs)
Rotation Period
0.414 day
Number of Satellites
16
Jupiter & it’s Moon --- Io
The Nine Planets：
(6) Saturn (土星)
Average Diameter
116 700 km
Mass (Earth = 1)
95.2
Density (water = 1)
0.69
Revolution Radius
1 430 000 000 km
Revolution Period
10 800 days (29.5 yrs)
Rotation Period
0.439 day
Number of Satellites
18
The Nine Planets：
(7) Uranus (天王星)
Average Diameter
50 700 km
Mass (Earth = 1)
14.5
Density (water = 1)
1.32
Revolution Radius
2 870 000 000 km
Revolution Period
30 700 days (84 yrs)
Rotation Period
0.718 day
Number of Satellites
15
The Nine Planets：
(7) Neptune (海王星)
Average Diameter
49 200 km
Mass (Earth = 1)
17.1
Density (water = 1)
1.64
Revolution Radius
4 500 000 000 km
Revolution Period
60 230 days (165 yrs)
0.671 day
Rotation Period
Number of Satellites
8
The Nine Planets：
(9) Pluto
(冥王星)
Average Diameter
2 270 km
Mass (Earth = 1)
0.0021
Density (water = 1)
2.05
Revolution Radius
5 910 000 000 km
Revolution Period
90 500 days (248 yrs)
Rotation Period
6.39 days
Number of Satellites
1
Asteroids (小行星帶)
Comets
(彗星)
A comet attracted by the Sun
Meteors
(流星)
Meteorites
(隕石)
End of the Wonderful Tour
Hope someday, somehow, we can
have the real chance to visit our
neighbourhood in the Universe!