Why Mars and not other planets ?
The other two celestial bodies in orbits close to Earth are the Moon and Venus .
Earth is 384,403 kilometers from the Moon . In the cosmic universe , this distance is almost like leaving the door of the house and entering the garden . This proximity also provided a great advantage in the exploration of the Moon . Even stepped on .
When Venus is closest to Earth , the distance between them drops to 38 million kilometers . Mars , on the other hand , is 54.6 million kilometers away at its closest point .
There are far fewer vital resources on the Moon , and a Lunar day lasts a month . It also does not have an atmosphere to create a barrier against radiation .
The average temperature on Venus is over 400 degrees and the barometric pressure is 900 meters below Earth . It also has nights that last for 120 days .