Orbiting in the Habitable Zone of Two Suns – Exoplanet Exploration: Planets Beyond our Solar System

Orbiting in the Habitable Zone of Two Suns – Exoplanet Exploration: Planets Beyond our Solar System: This diagram compares our own solar system to Kepler-47, a double-star system containing two planets, one orbiting in the so-called "habitable zone." This is the sweet spot in a planetary system where liquid water might exist on the surface of a planet.