Summary: A lake that could have supported life on Mars existed for as long as tens of thousands of years have been discovered. The fossil remains of the lake were identified not far from where the space agency's Curiosity rover landed inside Gale Crater on Mars in 2012, and where the rover science team has found chemical and mineral conditions needed for life. Scientists said that the ancient lake was one part of a watery Martian environment that also included streams and subsurface groundwater, which together formed a place where life could have survived for tens of millions of years. This is the first once-habitable environment ever found on Mars. However, while concluding that Gale Crater was habitable is a major step forward in the search for possible extraterrestrial life, it does not necessarily mean that organisms ever actually lived there.
Opinion: I was very excited when I first read the article. It seems possible that there have been life on Mars several thousands or even millions of years ago. This also proved many hypothesis right about life on Mars. Although results cannot confirm if there was actually any signs of life of Mars, I believe that with further results, the truth can be discovered. If everything goes well, Man might even create a second earth on Mars.
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