Are we alone in the universe? Are there other planets like Earth in the galaxy? Could they harbor life?
NASA’s Kepler telescope spent four years staring long and hard at a small fraction of the night sky to help answer those questions.
On Monday, mission scientists said the most sophisticated and comprehensive analysis of Kepler data yet added 219 exoplanet candidates to the list of thousands already discovered by the telescope.
And 10 of those are about the same size as Earth and orbiting stars similar to our sun.
That puts Kepler’s planet-finding tally at a total of 4,034 exoplanet candidates, about 50 of which are Earth-sized and at the right distance from their...