NASA discovers Mars size planet with Earth size neighbours

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WASHINGTON: Scientists in NASA have discovered planet of the size of Mars has been discovered 200 light years from Earth.

According to NASA, Kepler-138b is the innermost of three planets that orbit Kepler-138, a star less than half the size of our sun and roughly 30 percent cooler. The Kepler-138 system is located about 200 light-years from Earth in the direction of the constellation Lyra.

The outer two planets, Kepler-138c and Kepler-138d, are approximately the size of Earth.

Kepler-138c is likely to be rocky, whereas Kepler-138d is less dense and cannot be made of the same mix of material as Earth.

All three planets orbit too close to their star for liquid water to exist on the surface and support life.