A vector is a mathematical construct that has magnitude and direction. The cross product of two vectors is a binary operation in three-dimensional space that results in a third vector that is ...
In the present situation, both Earth and Mars are moving in the same direction around the Sun, but the slower one, Mars, appears to move backwards compared to the faster one, Earth. Just an illusion. The retrograde motion of Mars â like the apparent motion of the slower car on the highway â is nothing more than an illusion.
Mars' period of revolution in its orbit around the sun is 1.88 earth years (687 earth days).ince the earth and mars both orbit the sun, the distance is changing all the â¦ time. In 2003, the orbits lined up, and Mars came within 55 million kilometers. Driving your car at 50km/hr, it would take 114 years to reach Mars when it was 55 million kilometers away.