太陽系問題fast fast fast!!!!!!!!!

Venus, instead of Mars.

You can check it the referece:

Distance from Sun:
Venus: 0.7 AU
Earth: 1 AU
Mars: 1.5 AU

Therefore, distance between Earth and Venus is 0.3 AU and Earth between Mars is 0.5AU. Hence, Venus is closer.

= =
火星

金星最接近地球。

Mars,it is 最接近地球

2007-03-14 18:08:02 補充：
It is because Mars is 最接近地球,so the scientist want to find out that can we live there.