Scientists say cosmic wind has left many exoplanets barren

The search of alien life is still a mystery for researchers on our planet, and all scientist and space agencies are waiting for one evidence to detect the extraterrestrial life beyond our planet. Our research for alien organisms has only just started; it could soon be time to at least accept the possibility that the evolution of life might be a far less common event than previously assumed.

The two research papers issued in Astrophysical Journal Letters unveil that cosmic wind may have shredded many candidates of their chance at life. Chuanfei Dong of Princeton, who started the first study, said that universal definition and climate models of the inhabitable zone consider only the surface temperature, But the stellar wind can contribute to the long-term corrosion and atmospheric loss of many exoplanets, so the climate models tell just part of the story.

The first paper views at the timescale of atmospheric retention on Proxima Centauri b, which revolves around the nearest star to our cosmic system, some four light years away.
Another paper questions how deep oceans could sustain on ‘water worlds’ planets thought to have seas that could be hundreds of miles beneath.

The investigations show that the celestial wind, a constant emission of charged particles that sweep out into space, could severely drain the atmosphere of such planets over hundreds of millions of years, rendering them powerless to host surface-based life as we understand it.

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Megha Singh

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