some scientists claim that there was life on mars. is it really true? or its all nonsense.
The results of missions to mars held long ago like Viking 1 and Viking 2 did not give any such proof which would show any signs of life on Mars .Till now the search is going on for evidence that would give any conclusion regarding the existance of life on mars.Mars has many similarities to earth.The size of the ice caps vary there with time.Though a year on mars is longer than on earth but the span of a day on both the planets is nearly the same.Also there is a possibility of different seasons on mars just as on earth due to their tilts being similar.All these similarities lead scientists to look for evidences of life on earth's neighbour, Mars.Apart from looking for the fact that if their is any life on Mars presently, NASA is also searching for traces of any civilisation that might have existed on Mars.The Curiosity rover , so far has given the news that there was existance of some lake and minerals like nitrogen,oxygen,sulphur,hydrogen etc on the suface of Mars.This leads to the very obvious possibility that the water might have supported bacteria at some point of time.Further, organic molecules and signs of things giving the appearance of bacteria were found on a meteor from Mars.Antarctica was hit by the meteor.But at the same time the atmosphere of the red planet is very cold.So , overall there is no conclusion till today that whether there have been ever any life form on Mars or whether there is actually some kind of habitat in or whether there is no life at all.The research is going on to discover the truth.