On the Earth, starting on 01/01/1950 AD a rocket is launched bound to Mars. Its velocity is constant and equal to 27.900 m/s.
The duration of the journey is 270 days.
The rocket trajectory is a non linear version of the so-called dog curve
where the rocket is the dog and Mars the dog master...
Each celestial body is colored according to its actual color:
the Sun (yellow),
the Earth (dark blue),
Mars (red),
The Rocket (white).
See a few possible journeys (including this one):
Here is the distance {Earth-Mars} -millions of kilometers- starting on 01/01/1950 AD and during seven marsian years: