The atmosphere on mars is very thin it contains Carbon dioxide, nitrogen and argon.
It may have gradually lost its atmosphere to the solar winds or a body or bodies that collided with mars
Near the Poles
Scientists are still exploring the possibility that there is some kind of microscopic life on Mars, but certainly there is no life on Mars that we have been able to see so far, in our various missions to that planet. I personally am very doubtful that any native life will ever be found on Mars. Of course, we may go there and introduce life to Mars.
Due its distance, it is not known for sure if Sedna does have an atmosphere. Scientists have speculated that a tenuous atmosphere may exist for some of its orbit, from the Nitrogen that is present.
Mars may have had a thicker atmosphere because if it can have life, it should have a thicker atmosphere. because of ALIENS
It may have gradually lost its atmosphere to the solar winds or a body or bodies that collided with mars
There is no liquid water now on Mars. There may have been, in the past. Also, there is ice on Mars.
yes it may happen on mars
Near the Poles
There is little to no weathering on Mars due to the very small amount of atmosphere Mars has. Although there is evidence that there may have been weathering there in the past.
Since life as we know it requires water, scienctists hypothesize that Mars may have once had the conditions needed for life to exist.
On Earth, none at all. Even on Mars, the gravity wasn't enough to retain any atmosphere that it may have had.
Scientists are still exploring the possibility that there is some kind of microscopic life on Mars, but certainly there is no life on Mars that we have been able to see so far, in our various missions to that planet. I personally am very doubtful that any native life will ever be found on Mars. Of course, we may go there and introduce life to Mars.
Auroras are interactions of the planet's magnetic field with the solar wind, exciting particles in the upper atmosphere. Mars' atmosphere is thin and its field weak, so such interactions as there may be would not be visible.
Scientists still hope that Mars may have life of some kind; it would be an exciting discovery!Some reasons why Mars is unable to form EARTH life forms would be the lack of an oxygen atmosphere and the lack of water except possibly as ice in the polar regions.