Shulou(Shulou.com)11/24 Report--

According to reports, astronomers have analyzed the distant terrestrial planet TRAPPIST-1e and established a new framework of extrasolar planets, which will help scientists determine whether there are planets suitable for life or human habitation outside the solar system.

TRAPPIST-1e is one of seven planets in the TRAPPIST-1 planetary system, orbiting a cryogenic M dwarf star 39 light-years away. In fact, all of these extrasolar planets are considered to be rocky or terrestrial planets of similar size to Earth, which makes the TRAPPIST-1 planetary system an important focus in the search for extraterrestrial life.

In the coming year, the TRAPPIST-1 planetary system and the TRAPPIST-1e planet will be the key research objects of the James Weber Space Telescope (JWST), and TRAPPIST-1e is considered to be one of the most likely habitable exoplanets so far.

The latest study uses computers to simulate the climate of TRAPPIST-1e, which is similar in size to Earth but 40% less massive than Earth. The planet is located in the habitable zone of the host star, where the temperature is suitable for liquid water.

The researchers observed TRAPPIST-1e 's simulated climate response, especially the effects of carbon dioxide on extreme weather conditions and the rate of weather change, and then compared TRAPPIST-1e with Earth. Professor Asaf Hodgman (Assaf Hochman) of the Hebrew University of Jerusalem, Israel, who led the study, said that these two variables are crucial to the existence of life on other planets, and scientists are conducting the most in-depth research in history.

Hodgman and colleagues found that the atmosphere of the TRAPPIST-1e planet is significantly more sensitive to greenhouse gases than Earth, meaning that the increase in greenhouse gases in the TRAPPIST-1e atmosphere may lead to more extreme climate change than Earth.

TRAPPIST-1e 's sensitivity to greenhouse climate may be due to the tidal locking effect of the planet and the host star, which means that one side of the exoplanet is always facing the host star, and the "day side" is constantly bombarded by space radiation, unlike when the earth rotates around the sun.

Hodgman concluded that our exoplanetary framework and JWST observations will help scientists effectively assess the state of the planet's atmosphere without having to send astronauts to visit the planet. The planetary framework will help us make informed decisions about which planets are suitable for human habitation and may even find signs of life on these planets.

He and his colleagues believe that observing the climate of Earth-like exoplanets like TRAPPIST-1e will help us better understand the climate changes that are currently taking place on Earth. In addition, the study of these conditions will help scientists better understand how the Earth's atmosphere will change in the future. The study is published in the Astrophysical Journal.

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