Kepler 452 b orbits its star at about the same distance as Earth, but its half-diameter is 60 percent larger than Earth’s.
Kepler mission scientists say they believe it is the most Earth-like planet.
This statement is exciting for astronauts because its surface may have water and an environment conducive to life.
NASA’s science chief John Grunsfeld called it the “closest” new world to Earth.
This new world would also be among the Earth-like planets, one such planet being Kepler 186f.