Never mind, young kid may get wrong. The Chinese term 恆星 行星 衛星 are easily confused and messed up.
I prefer English terms.
恆星 is Star
行星 is Planet
衛星 is Satellite (or moon)
恆星 Star does not move (only rotates)
行星 Planet 'circles' 圍繞 around the Star 恆星
衛星 Satellite 'circles' 圍繞 around the Planet 行星
In Solar system 太陽系
恆星 Star is the Sun
行星 Planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
衛星 Satellite of Earth is the Moon
In Solar system 太陽系, the Sun is the largest. However, the Sun is relatively tiny in the whole Universe.
If there is no Sun, all Planets will not exist. If the Sun does not produce heat, our Earth can be minus 238 degree celsius.
At present, there is no Martian living in Mars. 現時金星沒有外星人居住.
I agree with the others that you need to pay more attention during class.
Happy learning....
Try study it at
http://solarsystem.nasa.gov/planets/index.cfm
2007-05-23 14:02:31 補充:
發問者評價: 唔明 ?_?
BUY A BOOK (or library) and read/study it la.....