NASA’s Transiting Exoplanet Survey Satellite (TESS) recently detected the new exoplanet, known as TOI-700e 102 light-years from the solar system in the Southern Hemisphere constellation Dorade, according to a report of the sightings announced at the annual meeting of the American Astronomical Society, held in Seattle.This exoplanet is the size of Earth and is probably rocky. It is in a habitable zone near its star corresponds to the distance where liquid water could be on the surface of a planet”, according to the director of the Plane tarium Rio Tinto Alcan, in Montreal, Olivier Hernandez.
“Furthermore, it’s just over 95% the diameter of Earth. It’s interesting because it has an atmosphere and is in the habitable zone, features that resemble those of planet Earth.” , explained the astrophysicist, quoted by the Canadian press.
Another exoplanet detected, TOI-700b, is the closest to the star. It is almost exactly the size of Earth and is probably rocky and travels one orbit every 10 days. That’s not all, TOI-700c is a gas giant about 2.6 times the size of Earth and orbits its star once every 16 days, according to NASA.
The outermost planet in the system, TOI-700d, is 1.1 times larger than Earth and has an orbital period of 38 days. It is also in the habitable zone of its star.
All these planets would be in synchronous rotation of their star, that is to say that they always present the same face to their star, according to the same source. “This is one of the few systems with multiple small planets in the habitable zone that we know of,” astronomer Emily Gilbert of NASA’s Jet Propulsion Laboratory said in a statement.
Last December, two potentially habitable exoplanets had already been discovered by the American space agency, located only sixteen light years from us.