Relative size of planets Earth Neptune Jupiter Relative size of Mercury’s orbit Sun Mercury Stars and planets are enlarged for visibility.

Relative size of stars Sun 2 times 3 times as wide Star temperature 6,500° 16,000° F

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Kepler 22b was the mission’s first confirmed planet in the habitable zone.

Kepler 47c is in the habitable zone, but as a gas giant it would not be hospitable to life.

The two outer planets of the Kepler 62 system may lie in the habitable zone, where liquid water could exist on the surface.

The Sun and the inner three planets of our solar system are shown here for comparison. At this scale the Earth is barely visible.