Kepler space telescope discovers a planet very similar to Earth in the Milky Way: K-452b

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Nasa says: ‘Astronomers are on the cusp of finding something people have dreamed about for thousands of years – another Earth’

The $600 million Kepler Space Telescope launched in 2009 with the goal of studying the diversity of planet systems in the Milky Way galaxy. In addition, the mission aimed to find rocky, Earth-like planets orbiting their parent stars at a distance where liquid water could form (the so-called “habitable zone,” or “Goldilocks zone”).

See how NASA’s planet-hunting Kepler spacecraft works in this infographic
The mission of the Kepler Space Telescope is to identify and characterize Earth-size planets in the habitable zones of nearby stars.

Source SPACE.com: All about our solar system, outer space and exploration