(CNN) - The Kepler spacecraft has detected 219 new exoplanet candidates, including 10 near-Earth-size planets in the so-called "Goldilocks Zone."
In a press briefing at NASA's Ames Research Center, scientists revealed the "most comprehensive" catalog yet of potential planets in our galaxy, bringing the total to 4,034.
A Kepler mission scientist said, for the first time, there is at least one planet that almost matches the Earth. It's a rocky planet that is only 30 percent wider than Earth and has an orbit of almost exactly one year.
Since the Kepler mission launched in 2009, it has identified and confirmed more than 2,300 exoplanets.
An exoplanet is a planet that exists outside of our own solar system.
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