K2-155d Exoplanet discovered One May Be Habitable

15 New Exoplanets Are Discovered: One May Be Habitable

Today our report is dedicated exoplanets, it seems that we have some interesting news for you. Let’s find out together.
Astronomers reported that they discovered 15 new exoplanets near our solar system. The new exoplanets were found orbiting small and cool stars. It is also called red dwarf stars. Among these exoplanets, 3 were discovered to be super-Earths, which are to some extent bigger in size than our Home planet.
One of the new discovered exoplanet is called K-155 and it is around 200 light years away from Earth considered the brightest red dwarf stars. K2-155’s system includes three super-Earths, the super-Earth orbiting the furthest away from the star could be within its habitable zone. K2-155d had a radius that is 1.6 times larger than that of Earth. Teruyuki Hirano, the lead researcher of the new study, from the Tokyo Institute of Technology, said “In our simulations, the atmosphere and the composition of the planet were assumed to be Earth-like, and there’s no guarantee that this is the case.” “Large planets are only discovered around metal-rich stars and what we found was consistent with our predictions. The few planets with a radius about three times that of Earth were found orbiting the most metal-rich red dwarfs.”
Scientist also claim that there is a liquid water in the K-155d surface. In their opinion the liquid water could make an ideal candidate to host alien life. But to say exactly whether the planet is habitable or not they should study both the planet and its host star.
“This is a unique finding, and many theoretical astronomers are now investigating what causes this gap” Hirano added. He hopes that NASA’s Transiting Exoplanet Survey Satellite (TESS),NASA TESS Sateliteplanned to be launched in April 2018, will help to find out more about new planets. “TESS is expected to find many candidate planets around bright stars closer to Earth.” “This will greatly facilitate follow-up observations, including investigation of planetary atmospheres and determining the precise orbit of the planets.”
The discoveries was published in The Astronomical Journal, as two papers. To study the exoplanets, researchers used data from NASA Kepler’s second mission, K2 along with observations from Hawaii’s Subaru Telescope and Spain’s Nordic Optical Telescope.

Source: www.astrobio.net