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For the first time in a distant solar-type stars discovered a planet the size of no more than our Earth.
The long-awaited Planet, ... e. at a distance, which may exist on the surface of liquid water.

Already known to the world that satisfy all these criteria, except one: the size of. Our cozy planet - not the major, and to search for distant worlds of the same size is much harder than the big giants. Kepler-20e and Kepler-20f - the first of these ... Still, another achievement of the telescope Kepler, the famous ... It shows that we are now on the shoulder and the search for very small planets close to the size of our. Finding long-awaited ...

Moreover, these exoplanets found just two, both in the star Kepler- 20, within the Milky Way, about a thousand. light-years away. The planet Kepler-20e slightly less than Venus, with a radius of about 0.87 of the ground, makes a complete revolution in its orbit in 6.1 Earth days. Kepler-20f a little more of the earth ( earth radius 1.03 ), and it describes a full circle in its orbit for 19.6 days. The brevity of the local year is associated with the proximity of the planets to their stars - and the same proximity creates the conditions here, alas, is unacceptable for life as we know them. Calculation shows that Kepler-20f red-hot above 400 OS ( much like the day side of Mercury ), and the Kepler-20e even hotter - up to 760 operating systems. At this temperature, the glass melts even.

In addition to these, in the Kepler- 20 there are three major planets, the size of Earth, though less than Neptune. Kepler-20b, the closest to the star, making the turnover in an orbit of 3.7 days, while Kepler-20c, and Kepler-20d are next, and last year for them, respectively, 10.9 and 77.6 days. However, even the most distant planet from the star is too close to it - the radii of the orbits of all five lower than that of Mercury. On the other hand, the star of Kepler- 20, although it belongs to the same class of dwarf yellow as our sun, somewhat smaller and cooler than it.

Interestingly unusual for us in the position of the planets Kepler- 20. In our solar system are small rocky planets ( from Mercury to Mars ) occupy close to the star position, and the large gas planets ( from Jupiter and beyond) are significantly more. In the Kepler- 20 alternate positions of the planets: large - small - large - small - large.