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Earth may not be the best place to live – the BGR



Searching for worlds outside our solar system, scientists often compare newly discovered planets to our own as they make well-founded assumptions about their potential to support life. It makes sense, since Earth is the only planet we know to have life. But what if the life-giving state of the earth is actually deficient? What if other planets among the myriad galaxies not only support life, but create even better conditions for a variety of lives than we would ever have seen at home?

Lecture at the Goldschmidt Geochemistry Congress in Spain Stephanie Olson of the University of Chicago, that some of the planets that we might find around distant stars in the so-called "habitable zone" are even more perfect for life than Earth.

Olson's focus on exoplanets with Earth-like oceans with liquid water. Water, according to scientists, is crucial for life to take hold. However, some oceans can better support a variety of life forms than others. Exploring Earth's oceans and simulating climate and ocean systems on exoplanets, Olson's team discovered that Earth's oceans are far from perfect.

"Said Olson during a keynote lecture." Life in the Earth's oceans depends on the upward movement (upward flow), which returns the nutrients from the dark depths of the ocean to the sunlit parts of the ocean, where the photosynthetic life is alive, more uptake means more nutrients, which means more biological activity, these are the conditions we need to look for in exoplanets. "

A combination of" higher atmospheric density, slower rotation rates, and the presence of continents " This, according to Olson, suggests that Earth may not be the perfect place for life as we know it, and that other planets may be even more habitable than our own must seek their life-sustaining worlds thereafter narrow down where they think they have the best chance of finding them, until we do can actually find extraterrestrial life somewhere in outer space, we can only make our best guesses.

Image Source: NASA / ESA

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