New planet candidates from the eighth Kepler planet candidate catalog show numerous terrestrial worlds that are near the size of Earth and within the habitable zone of their stars. The dark green span represents an optimistic estimate for habitable zone, while the brighter green a more conservative estimate. Blue circles are confirmed exoplanets, while yellow circles are new planet candidates that require follow-up observations. Credit: NASA/Ames Research Center/Wendy Stenzel
Rocky planets are probably a whole lot more common in our galaxy than astronomers previously believed—according to the latest release of Kepler Space Telescope data last week—a scenario that enhances the prospects for extraterrestrial life in nearby solar systems...
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