Land is an exception among the habitable planets in our galaxy: their chemical composition is totally different from the Earth. This is the conclusion the authors of an article in preprint arXiv. Brief research reports New Scientist. The Portuguese University of Porto and his colleagues studied the stars, the mass and the radius of which is different from the sun, and in the habitable zone of a planet there, where the water is present in liquid form. It was found that iron and other metals in the composition of these stars is less than that of the stars around which address only the uninhabited planet.
Since the planet’s chemical composition close to its star, the celestial bodies in the area of life is usually less metal than in the bowels of the Earth and the Sun, scientists have decided. As a rule, around the iron-rich stars are rotating massive rocky body, wrapped in a giant gasbag. Read the rest of this entry »