London, Sep 25.- An international team of astronomers discovered a giant planet similar to Neptune, but with stellar radiation that heats it to more than 1,700 degrees and whose year lasts only 19 hours, the journal Nature Astronomy reported today.
According to a study published in this specialized British journal, the new celestial body is called " ultra-hot Neptune " and is located 260 light years from Earth.
In addition, it is one of those ultrashort worlds that orbits so close to its star (60 times closer to the Sun than Earth), which is why its year lasts only 19 hours.
This planet remains close to the star LTT 9779, weighs twice as much as Neptune and is approximately 4.7 times the diameter of Earth and 29 times its mass, with a solid core surrounded by an atmosphere of hydrogen and helium, experts say.
Scientists noted their amazement at the high temperatures of ultra-hot Neptune, because at these figures, heavy elements such as iron can ionize in the atmosphere and separate molecules.
"Therefore, we are perplexed to see how it preserved its hydrogen-helium atmosphere for so long given the intense stellar radiation," they refer.
According to the researchers, the characteristics of the ultra-hot Neptune make it a "unique laboratory" for studying the chemistry of planets outside our solar system. (PL) (Photo: File)