Washington, May 11: NASA’s Kepler mission has verified 1,284 new planets – the single largest finding of planets to date – giving fresh hopes to astronomers to discover another Earth reverberating with life. Scientists from Princeton University and NASA confirmed that 1,284 objects observed outside Earth’s solar system are indeed planets. (Read: NASA releases first-ever global topographic model of mercury)
“This announcement more than doubles the number of confirmed planets from Kepler so far to more than 2,300,” said Ellen Stofan, chief scientist at the NASA headquarters in Washington. ”This gives us hope that somewhere out there, around a star much like ours, we can eventually discover another Earth,” he added.
The discovery hinges on a technique developed at Princeton that allows scientists to efficiently analyse thousands of signals Kepler has identified to determine which are most likely to be caused by planets and which are caused by non-planetary objects such as stars. This automated technique — implemented in a publicly available custom software package called Vespa — computes the chances that the signal is in fact caused by a planet.
The researchers used Vespa to compute the reliability values for over 7,000 signals identified in the latest Kepler catalogue, and verified the 1,284 planets with 99 percent certainty. They also independently verified more than 700 additional planet signals that had already been confirmed as planets by other methods.

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