Mars would have presented conditions conducive to life before Earth.

The idea that our neighboring planet could be home to intelligent beings has captured everyone’s imagination and sparked many visions of Mars, some peaceful and realistic while others were more whimsical. The point is that humans have sent more spacecraft to study Mars than any other planet beyond Earth. To date, there is no evidence of life on Mars, but the investigation has not stopped. Just as life itself evolves, so do the ways in which we seek it. Today, the red planet remains a prime target in the search for life. Perhaps because precisely, according to a study, the red planet would have presented viable conditions for life a few billion years ago.

A hope that is 4 billion years old …

March is on average inhospitable cold, with temperatures averaging -63 ° C (-81 ° F). The highs in a season that scientists compare to summer sometimes reach 30 ° C (86 ° F), ideal for a trip to the beach on Earth. But on Mars, impossible. Since the planet’s atmosphere contains 95.3% carbon dioxide, and without a magnetic field, its surface is bombarded by solar radiation. Low atmospheric pressure combined with cold temperatures means that life as we know it cannot exist under these conditions.

However, a study by the University of Western Ontario shows that Mars had a real chance of developing life very early, 4 billion years ago. Especially when the giant life-inhibiting meteorites stopped hitting the red planet. These findings, published in the scientific journal “Nature Geoscience,” suggested that the conditions under which life could have thrived may have occurred on Mars around 4.2 to 3.5 billion years ago. And that predates the earliest evidence of life on Earth in 500 million years.

A team of researchers from the Western Ontario Department of Earth Sciences and Geography conducted “mineralogical analyzes of meteorite fragments from the highlands south of Mars.” And according to Desmond Moser, director of research, “giant meteorite impacts on Mars between 4.2 and 3.5 billion years ago may have in fact accelerated the release of the first waters from the interior of the Earth. Planet, paving the way to life – generating reactions ”.

This means that the Martian surface would have become habitable when water is believed to have been abundant there. In fact, many images of the planet show “valleys carved out by rivers, boulders formed in streams and piles of sediment that could come from basins and deltas.” So, under these conditions, life could have been possible.

See comments

Related Articles

Back to top button