The habitable zone is a belt just far enough from the star for any orbiting planet to be able to have liquid water on its surface. Jupiter has a radius of about 44,423 miles (71,492 km) and has a mass that is 318 times that of the Earth.Ħ8: The number of Earth-size planet candidates in the Kepler data release.ĥ4: The number of the planet candidates that appear to be in the "habitable zone" around their parent stars. Super-Earths are planets with masses between two and 10 times the mass of Earth, according to NASA.ġ70: The number of stars that seem to have more than one planetary candidate orbiting them – which would make them parts of alien solar systems.ġ65: The number of potential planets found to be the size of Jupiter, which is the largest planet in our solar system. Neptune has a radius of about 15,388 miles (24,764 km) wide and has a mass that is 17 times that of the Earth, according to NASA.Ģ88: The number of exoplanet candidates discovered by Kepler that are in the super-Earth class.
NASA has repeatedly cautioned that all of Kepler's findings must be confirmed by follow-up observations using other space and ground telescopes.Ħ62: The number of planet candidates found by Kepler that would be about the size of Neptune. Kepler's field of views covers about 1/400th of the sky.ġ,235: The number of potential alien planets that Kepler has discovered. 156,000: The number of stars in the constellations Lyra and Cygnus that the Kepler observatory is staring at 24 hours a day, seven days a week, in the search for extrasolar planets.
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