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Kepler-186f, first validated Earth-size planet to orbit a star in the habitable zone (artist's impression) Credit: NASA Ames/SETI Institute/JPL-Caltech |
A paper published a few days ago in Monthly Notices of the Royal Astronomical Society, a team of researchers from the Stellar Astrophysics Centre at Aarhus University, Denmark have shown what they believe is evidence of Earth-sized planets orbiting 33 stars in the Milky Way galaxy that are about 11 billion years old. In other words, these planets were formed at least 8 billion years before Earth in a Universe that appears to have had the right conditions for creating these planetary systems right here in our own galaxy.


















