Astronomers have discovered an Earth-like planet in the habitable zone

The newly discovered planet has been designated TOI 700 e. It is located in the habitable zone of its star TOI 700. A habitable zone is the region in space that extends around a star – on planets in this zone there can be chemical and physical conditions that allow life to emerge, maintain, and evolve.

A new orb has been registered thanks he-goat (Transiting Exoplanet Survey Satellite). Thus, the new planet joined TOI 700 d, which was spotted in this system in 2020 (which is also in the habitable zone).

“This is one of the few systems we know of with many habitable small planets,” said Dr. Emily Gilbert of NASA’s Jet Propulsion Laboratory (JPL) in California. The TOI 700 system is an exciting prospect for further work. Planet E is about 10 percent. smaller than planet d, so the system also shows how additional TESS observations are helping us find increasingly smaller worlds.

TOI 700 is an M dwarf star located in the constellation Dorado, about 100 light-years away.

The TOI 700 e is about 95 percent. Earth’s size. The newly discovered world is mostly rocky and located in the “optimistic” habitable zone where water may have been present at some point in the celestial body’s history. In turn, her cosmic sister Toy 700 d It is located in a “conservative” habitable zone where water may have been present for most of the planet’s existence.

TOI 700 e orbits its star in just 28 days, TOI 700 d needs 37 days. “If the star were a little closer, or the planet a little bigger, we might have seen TOI 700 e in the first year of TESS collecting the data,” said Dr. Ben Hurd of the University of Maryland. But the signal was so weak that it took an additional year of observing the transit to determine it.

Scientists believe that TOI 700 e and TOI 700 d are They always face their star on the same side. Such a situation, unfortunately, reduces the likelihood of life there, but does not exclude it. As Dr. Joy Rodriguez of Michigan State University said, “Even with more than 5,000 exoplanets discovered so far, TOI 700 e is a prime example that we still have a lot to learn.” The research has been accepted for publication in Astrophysical Journal Letters.

Benjamin Blair

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Astronomers have discovered an Earth-like planet in the habitable zone

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