Discovery of super-earth which is 31 light-years away could be habitable
Super-earth named as GJ 357 d lies within the habitable zone. It is 31 light-years away from our earth. Survey satellite of NASA has observed a planet that is outside of our solar system. Transiting Exoplanet Survey Satellite also referred to as TESS looks for planets that lie outside of our solar system to explore and find the presence of aliens on other planets. It is also helpful to analyze the habitability of humans on other planets. TESS has spotted several exoplanets. These planets orbited M-dwarf star, called as GJ 357 in the largest modern constellation, Hydra.
The star is almost half of the temperature of the sun and one-third of the sun’s mass. This study was published in the Astronomy & Astrophysics journal. Three exoplanets were discovered. The first exoplanet was GJ 357 b. This is almost a quarter larger and three-quarters massive. The planet is more than ten times closer to its star as compared to mercury. According to an estimate by researchers, the average temperature of this exoplanet is approximately 490 degrees Fahrenheit. It does not include any warming effects of an atmosphere. The planet orbits around the star in less than four days. This suggests how much close the planet is to its star. The planet is also labeled as hot earth by an astrophysicist at the Institute of Astrophysics of Canary Islands. The planet will not be able to host any life forms. It is the third biggest transiting exoplanets know to us till now.
Another exoplanet is GJ 357 d, which is six times the mass of the earth. It orbits around the star at a distance where the atmospheric condition is right enough to support the existence of water on the surface. This planet is on the outer edges of the habitable zone of the star. If the planet has a dense atmosphere, it may be able to trap enough heat to heat the planet. In between these two, another exoplanet exists which is GJ 357 c. It is more than thrice the mass of the earth. This planet completes one orbit around the star every 55.7 days and has a temperature of minus 64 degrees Fahrenheit.