A newfound planet called the Kepler-22b is an alien world that's almost like our own planet Earth. Confirmed by NASA's deep-space exploring Kepler spaceship and discovered by the Kepler space telescope, scientists believe the planet's surface lies close to an agreeable temperature of 72 degrees. Kepler-22b resides in the habitable zone of its host star, which makes it an ideal distance to support the existence of liquid water. While the Kepler-22b is 600 light years away and its radius 2.4 times bigger compared to Earth, its star bears a resemblance to our solar system's sun. "We're getting closer and closer to discovering the so-called 'Goldilocks' planet," says NASA director Pete Worden. Two promising planet discoveries were made previously, although these were later disputed, as both were eventually declared unfit for sustaining life. With the Kepler-22b's just-right temperatures though, this discovery marks an important step in what could be the confirmation of possible extra-terrestrial life.