Mars, from watery to dry planet

              Fig1:- Mars from its orbit

We all heard of myth that there are tiny green  men and women living on that red planet (mars). But believe me that's not true. 

Scientists found that the evidence of water on Mars. Okay believe me I'm not lunatic. It's true that Mars had water on its surface but from there many questions pop up that,As water is the basic building block for life is it possible that life had existed on Mars and if mars had water once where did it all gone. Well to answer this we have start with very beginning of the solar system or say mars.

    Fig2:- artistic illustration of oceans on                                     Mars 

Mars is one of 4 Rocky planets , it lies inside Goldilock zone (region around a star where water can exist in liquid form) as Earth.  When these 4 Rocky planets formed late heavy bombardment leave lots of water the the surface of  all four planets.  Water on the surface of Mercury and Venus vaporized due to proximity  to the sun. Earth was the luckiest planet among all the planets . Mars was lucky but not as earth. Due to small size mars's core doesn't able to create strong magnetic field which can protect its water from solar wind (stream of charged particle generated by sun). Solar wind  took away all the atmosphere from Mars and  made it dry and red (red due iron oxide)

 But many physicist thought that there can be small microbes in lava tubes where they can be  protected by sunlight and deadly radiation.

Now, we can tell that it's possible  that there can be many martians but not tiny green creatures but small  microbes living peacefully on small red planets.

 

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