NASA and other space agencies are planning for a manned mission to Mars. As the conditions on Earth are continuously deteriorating, we have to think of some other location in outer space which can be colonized by Humans.

Whenever it comes to human colonization in outer space Mars is the foremost location.But still we have to cover many risks if we plan to land a manned mission on the red planet.
Despite I have been a great advocate of manned mission to Mars but I have to compile a list of ten biggest risks factors that space agencies have to cover before they can plan a human landing on the red planet.

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