Discovered the oldest known exoplanets
Astronomers say they are unable to access the most ancient of known exoplanets, the planet is likely could support life. However, if the life on it was, it was over billions of years ago. Another interesting fact is that the planet is in astronomical terms very close to us - at a distance of 13 light years. Age planet, dubbed Kapteyn B is at least 11.5 billion years, ie it is twice older than the Earth and only 2 billion years younger than the universe itself. "It would be very interesting to see what life on this planet could exist. Also not well understood, which helped the planet survive such a long period of time, "said study author Guillaume Angalada-Escude, University of London Queen Mary.
According to scientists, the planet is a planet Kapteyn B-sister Kapteyn C, as well as the parent star Kapteyn. Researchers say that the planet-old resident of five times the size of Earth, but life on it was very likely. Planet Kapteyn C was unlikely to be habitable - it is too cold for life. Both planets have been detected by the gravitational tug of the method, when scientists observed the star Kapteyn Telescope using HARPS. According to specialists in London, now the star system Kapteyn almost certainly uninhabited although the planet itself Kapteyn B lies in the so-called habitable zone, ie, the temperature here allows the water to be in liquid form. Kapteyn star now about three times smaller than our sun, but in the past it should be a little more. According to astronomers, the planet Kapteyn b makes a complete orbit around the star 49 days, Kapteyn c - 121 per day.
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