The trajectories of Mars (red) and of the Sun (yellow) are displayed as viewed
from a Earth-like planet (blue). During this animation, the Earth is moved
from Mars -bottom left- to the Sun -top right- (see figure "The journey of an Earth-like planet (blue) from Mars (red) to the Sun (yellow)").
For each intermediate Earth trajectory, the 3-body system is visualized
with the Earth at the origin of coordinates. Each of the displayed trajectories
has a duration equals to one martian year.