« I will go anywhere, as long as it is forward.”

David Livingstone, (1813-1873), Scottish doctor, explorer of Africa.

Trip to Mars

If we try to envision seriously such a project, the first problem to be solved is fuel.

Our imagination traces direct lines between two objectives, but this is out of reality.

No movement in space follows a straight line and even light photons obey to mass attraction.

Little is known about trajectories in intersidereal space, but we observe asteroids moving at huge speed in our galaxy.

Hence, we can imagine that if we know about such an existing trajectory passing in vicinity of Mars and Earth, it would be sufficient to move a spaceship in it.

Taking it in and out for take-off and landing will need a small amount of energy.

Probably, the right precise speed must be reached by the vessel to enter such a gravitational trajectory.

So, exploring probes need to be sent in front.

Also, as for Saturn satellites, the right precise path, that is ellipse, which is a narrow strip must be found.