Mars may have been the host of life earlier than Earth, the study said
A new study suggests that life may have existed on Mars hundreds of millions of years before it was on Earth.
The Red Planet may have been ripe for life some 4.48 billion years ago, after the "life" inhibiting meteorites stopped striking the planet, according to the study. Life may have thrived before 4.2 billion and 3.5 billion years, according to comments made by lead author of the study, Desmond Moser. "The giant meteor impact on Mars between 4.2 and 3.5 billion years ago may have accelerated the release of early water from the interior of the planet, putting the stage of life-forming reactions," Moser said in a statement. "This work can point to good places to return samples from Mars." The images are made with an optical polarizing microscope Western & amp; Zircon & amp; Accessories Phase Laboratory. Desert Moser, Western University “/>
The small crystals of zirconium in this rock fragment were destroyed by the launch of Mars, but otherwise unchanged more than 4.4 billion years. The images are made with an optical polarizing microscope Western & amp; Zircon & amp; Accessories Phase Laboratory. (Credit: Desmond Moser, Western University)
The study analyzed some of the oldest known Martian minerals, looking at zircon and baddeleite beads, observed in Martian meteorites using electron microscopy and atomic bomb scanning
Planet Mars, showing Terra Meridiani, is seen in an undated image of NASA. Reuters / NASA / Greg Shira
"The [Ninety-seven percent] grains show metamorphic traits with low to zero strokes and no thermal shock shocks," the study said. On the other hand, about 80 [percent] of the explored beads of the bombed bark on Earth and the Moon show such characteristics. The gigantic impact proposed to create the Martian hemispheric dichotomy must therefore have taken place more than 4.48 years ago  Mars is believed to have been formed about 4.6 billion years ago, and Earth soon follows, approximately 60 million years later. It is usually assumed that life first appeared on Earth about 3.5 billion years ago.
The study was published earlier this week in the scientific journal Nature Geoscience.
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