NASA scientists have discovered another potentially habitable Earth-like planet that orbits a star located 100 light years from the Sun. The planet received the designation TOI 700 e. According to scientists, this rocky celestial body is 5% smaller than Earth, according to CNN..
It is the fourth exoplanet to orbit the cool red dwarf TOI 700.. All planets were found using the TESS telescope.
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This system includes the planet TOI 700 d, which was discovered in 2020, which is also thought to resemble Earth.. Both planets are in the star's habitable zone, meaning they can support liquid water.. And this may mean that life can exist on them..
“This is one of the few known systems with several small planets located in the habitable zone.. This makes the TOI 700 system interesting for further research.. Planet e is about 10% smaller than planet d, so the system also shows how additional TESS observations are helping us find smaller and smaller worlds,” said study lead author Emily Gilbert..
Closest to the star is the planet TOI 700 b, its dimensions are 90% the size of the Earth, it makes one rapid revolution around the star every 10 Earth days. It is also known about the planet TOI 700 c, it is 2.5 times larger than the Earth and makes one revolution around the star every 16 days. Both of these planets are likely tidally locked to the star, which means they always face the same side of the star, just as the same side of the Moon always faces the Earth..
The two exoplanets that are in the star's habitable zone, d and e, have longer orbits of 37 days and 28 days, respectively.. That is, they are much further from the sun. Newly discovered exoplanet e lies between planets c and d.
Red dwarfs like TOI 700 are fairly common in the universe.. In recent years, it has been found that planetary systems frequently revolve around them.. An example is the TRAPPIST-1 system and its seven exoplanets, which the James Webb telescope will observe..
Earlier, a group of astronomers led by Olga Zakhozhay from the Main Astronomical Observatory of the National Academy of Sciences of Ukraine discovered a giant exoplanet that revolves around the sun-like star HD 114082. The age of the planet is estimated at 15 million years, which makes this super-Jupiter the youngest exoplanet of its kind, for which it was possible to measure the radius and mass.