Possibility of planets that are more suitable for living than Earth in exoplanets
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The “ocean” of the extrasolar planet is still not well understood, but according to a researcher investigating the ocean circulation of the extrasolar planet, the “habitable zone” where life is thought to exist It is said that some of the planets may have more favorable conditions that allow life to thrive than Earth.
Goldschmidt2019: Abstract Details-Exo-Oceanography and the Search for Life in Uncharted Waters
https://goldschmidt.info/2019/abstracts/abstractView?id=2019002009
Upwelling Oceans: Modeling Exoplanet Habitability
There Could be Planets Out There Which are Even More Habitable than Earth-Universe Today
https://www.universetoday.com/143229/there-could-be-planets-out-there-which-are-even-more-habitable-than-earth/
This was announced by Dr. Stephanie Olson of the University of Chicago at the keynote address of the Goldschmid Geochemistry Conference.
NASA has been searching for 'stars with an environment like the earth' by setting the standard of 'inhabitable planets' on the earth. However, since there is no direct way to investigate whether a distant exoplanet is an Earth-like environment, we have modeled the planet's climate and evolution and asked for traces of life in the atmosphere (biosignatures).
Dr. Olson et al.'S research team found that in these conventional investigations, ocean circulation in extrasolar planets is only considered in terms of heat transport and climate change, while in the Earth's oceans, seawater rises from deep to surface. He pointed out that “upwelling” should be taken into account because many of the nutritional supplements were provided by “upwelling” and the activity of the living organisms increased.
When the research team actually calculated which planet had an effective upwelling using an ocean circulation model, the upwelling flow was fast on a planet with a high atmospheric density, a low rotation speed, and a continent. It was found that exists. According to Dr. Olson, the Earth is not the optimal environment for living, and there may be planets with more prosperous lives than the Earth.
by Silas Baisch
However, there is no space telescope that can identify the appropriate extrasolar planets and investigate the hypothesis of Dr. Olson et al. The multi-wavelength space station “ LUVOIR ” being developed by NASA and the extrasolar system It seems to be a subject entrusted to the planetary telescope “ HabEx ”.
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