The reliability of the resulting
planetary candidate list relies on the ability to identify and remove false positives.
Based on Kepler's growing
planetary candidate list, it is clear that our galaxy contains at least 150 billion planets, and that at least half of its stars have planets.
Not exact matches
According to
planetary geologist Ronald Greeley, «Jupiter's moon Europa, along with Mars and Saturn's moon Titan, tops the
list of likely
candidates for life.»
A newfound
planetary system has six worlds, five of which rank among the smallest known, and the
list of unconfirmed
candidates has swelled to four figures
Because of these false positives, a sequence of tests - as originally outlined by Alonso et al. (2004)- is employed, beginning with detailed revisions of the detection light - curves, and continuing for surviving
candidates with follow - up observations, to either reject them from the
list of
planetary candidates or to verify their
planetary nature.
Potential super-Earths — all with estimated diameters (or radii) between 1.5 and 2.2 that of Earth's but with close - orbiting periods of less than 41 days — that were found and released by the Kepler Mission as part of its 306 stars with
planetary candidates are
listed in the table below by designation number as a «Kepler Object of Interest» (KOI).
Some 706 stars from this target
list were found to have
planetary candidates after the first 43 days of observations, but only the identity and some characteristics of 306 stars with at least one
planetary candidate were released, including those of five possible multi-planet systems.