Great discovery: A solar system packed with planets three of which are habitable were discovered by astronomers.
Astronomers claimed that a liquid water could exist in the zone around the star, that makes them possible candidates for the presence of life.
The star named The Gliese 667C is orbited between five and seven planets and is part of a triple star system known as Gliese 667.
Guillem Anglada-Escudé of the University of Göttingen in Germany, who led the study says, "We identified three strong signals in the star before, but it was possible that smaller planets were hidden in the data," said
We re-examined the existing data, added some new observations, and applied two different data analysis methods especially designed to deal with multi-planet signal detection.
Both methods yielded the same answer: There are five very secure signals and up to seven low-mass planets in short-period orbits around the star."
The Gliese 667C solar system is amazingly similar to ours. And those three habitable planets are confirmed to be super-Earths: planets that have more mass than Earth but less mass than larger planets like Uranus and Neptune.
The star is just 22 light-years away in the constellation of Scorpius (The Scorpion).
Astronomers said," This is quite close to our solar system, within the Sun’s neighborhood, so to speak - and much closer than the star systems investigated using telescopes such as the planet-hunting Kepler space telescope."
"This is the first time that three such planets have been spotted orbiting in this zone in the same system," astronomer Paul Butler of the Carnegie Institute for Science who participated in the study said.
Similar systems have been found before and are very common in the Milky Way. However, most of these systems are built around Sun-like stars and are too hot to be habitable.
That is why the discovery of a system that contains multiple habitable planets surrounding a low-mass star, the Gliese 667C system is hope for humanity.
The discovery of more systems like Gliese 667C could mean that the amount of potentially habitable planets in our galaxy are more numerous than believed.
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