One member GJ767A similar to Neptune takes 4000 days to complete one orbit.One more solar systems like our solar system discovered by astronomers. Solar system, named GJ676A it has almost the same as the composition of the planets of our solar system.
In a study published in the arXiv and has been entered in the journal Astronomy & Astrophysics, GJ676A difference with us is only the larger size and fewer number of planets.
GJ676A system has two rocky planets that orbit close to the main star. Plus two giant gas planets orbiting some distance away. Striking difference is the size of planets in the solar system GJ676A.
As an illustration, the smallest member of the rocky planets GJ676A equal to four times the mass of Earth. While the largest gas planet five times the size of Jupiter - the biggest planet of our solar system.
Previously, other systems similar to our solar system have been found with the name of the HD10180. Solar system and even the latter is referred to as the richest exoplanets with seven to nine the number of planets orbiting the main star.
However, the HD10180 planets in the solar system are all made up of gases within a relatively close orbit. While GJ676A consists of rocky and gaseous planets. One member GJ767A similar to Neptune takes 4000 days to complete one orbit.
Similarly, Guillem Anglada said study leader Escude, a postdoctoral researcher from the University of Gottingen in Germany. Anglada Escude and his team used new techniques of data analysis for detecting planets around the primary star. But it was known earlier if this star to be the parent of a gas planet.
"It seems that other systems have a hidden recording. We just need new techniques to find them (another planet)," Anglada said Escude, Friday (6/7).
From previous studies found from the billions of stars in the Milky Way Galaxy, 15 percent of whom are likely to have a twin in our solar system. Although there was little, 15 percent of the amount it contains several hundred million stars is very similar to the "house" man.
"These results are assured if there is a solar system similar to ours. These data strengthen the hypothesis true and if indeed many of the world can be inhabited like the Earth," said Debra Fischer, an astronomer at San Francisco State University who was quoted last January 2010.
Sources: National Geographic News
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