Brez kategorije

Nasa discovered the first planet as big as Earth and in a habitable zone

The new discovery of astronomers. Outside our solar system, in a habitable area, they have discovered a planet TOI 700 d as large as Earth. “It’s inspiring because no matter what we learn about the planet, it will look completely different from what we have here on Earth,” the enthusiastic researchers said.

The planet-searching TESS satellite has found the first potentially habitable exoplanet, as large as Earth, orbiting a star about 100 light-years from Earth, NASA reported. The discovery was made during the 235th session of the American Astronomical Society in Honolulu on Monday.

The planet is known as the TOI 700 d and is one of three orbiting a star. It is just the right distance to support running water and is in an area suitable for living. Astronomers confirmed their findings with the infrared-capable Spitzer Space Telescope and with additional observations. They also modeled the planet’s potential environment to further examine its ‘livelihood’.

The find is fascinating for astronomers, as it is one of the habitable planets discovered outside our solar system and in Earth’s size. The TOI 700 d is the farthest from the three planets that surrounds a star in 37 Earth days. From its smaller star, the planet receives about 86 percent of the energy that our sun supplies to Earth. They think the planet is well closed, which means that one side is always in daylight.

The other two planets in the system, TOI 700 b and c, are different. The inner planet, b, is as big as Earth and as rocky as our planet, and it takes 10 Earth days to travel around the star. The second planet, c, is said to be gaseous and of magnitude between Earth and Neptune, which travels around the star every 16 Earth days.

Paul Hertz, director of the NASA astrophysics department, said TESS was designed specifically to search for Earth-sized planets orbiting surrounding stars. “The planets around nearby stars are easiest to track with larger telescopes in space and on Earth. The discovery of the TOI 700 d is a key scientific finding for TESS. Confirming the planet’s size and living zone status with Spitzer is another victory for Spitzer at the end of January . “

Initially, the star was misjudged to be much hotter, so astronomers thought that the planets orbiting it would be too close and hot to support life. But researchers working with the TESS team warned of a mistake. “When we corrected the star’s parameters, the size of its planets decreased, and we found that the farthest planet was about as large as Earth and in the area of ​​residence,” said Emily Gilbert, a student at the University of Chicago. “In addition, we did not detect a star blaze in eleven months of data collection, which improves the chances of the TOI 700 d being habitable and facilitates modeling of its atmospheric and surface conditions.”

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