Earth Size Neighbor Found

Scientists have discovered a planet only slightly larger than Earth in orbit around Alpha Centauri, only 4.37 light years from Earth (only Proxima Centauri is closer). The planet, which was discovered based on fluctuations in the star’s movement, orbits closer to its primary than Mercury does and completes an orbit every three days. The discovery was made using data from La Silla Observatory in Chile and will be officially announced in Nature on October 17.

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