Astronomers find new planets and systems on a fairly regular basis (science & technology FTW). However, Thursday's discovery of Kepler-186, a five-planet system, might change the game for astronomy and how we view outer space.

Astronomers claim that one planet in the system, named Kepler-186f, is the first definitive Earth-sized planet located about 500 light years from Earth in the constellation Cygnus. Kelper-186f also features a green circular band which suggests that liquid water might pool on the planet’s surface.

Although the mass, composition, and density of Kepler-186f are still not known, it orbits its star once every 130 days and receives one-third the energy that Earth does from the sun, placing it near the outer edge of the habitable zone.

Read more about the discovery of Kepler-186 at the Los Angeles Times and Spacefellowship.com.

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