The probe will travel for 11 months before entering Mars' orbit in August 2010. It will gather data on Mars' space environment and the relationship between solar wind and the planet's magnetic field.
2
火星没有地磁场,因此地表经常遭受太阳辐射的袭击。
Mars has no magnetic field, so the surface is constantly bombarded by radiation from the sun.
3
无论是火星还是金星都没有同地球一样的磁场,地球的磁场是由地球熔融核心中的电流产生的。
Neither Mars nor Venus has a magnetic field like the Earth's, which is generated by currents in the planet's molten core.