see diagram,


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送交者: chouqilozi 于 2009-03-24, 14:15:11:

回答: 那只是火星的自转造成的,和太阳和火星的距离毫无关系 由 HunHunSheng 于 2009-03-24, 14:03:19:

o
|\
| \
| \
| \
R----M

o is the center of sun, M is center of Mars, R is where the sunrise is, RM=radius,
if you know the time between sunrise and sunset, and how long a day is for Mars,
then you know the angle RoM.




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