As known to us, the Mars atmosphere consists of carbon dioxide and water vapor. By the chemical reaction of carbon and water, it forms carbonates mineral on mars surface, and such minerals prove the point that water has been present there for long. NASA has been looking for life on Mars by searching an evidence using telltale markers, biosignatures of Mars life and they have shown the presence of carbon.“It is also suggested that it is possible for there to be life today on mars” said John Grunsfeld.
Over the last fifty years, scientists have launched several missions for determining the existence of life on it. And they observed that Mars always not a moribund to the world and as said above, these are the evidence to the world that there might be some ice under the surface in many places on Mars and may have magnetic fields. As the data collected by scientists, most likely they concluded that Red planet may have thicker atmosphere and lakes or oceans.
NASA, Russia, Europe and many other countries have planned together to discover, whether life exists there or not. Hopefully, we may get an answer to this within the next 10 years.