Science Is Good on Instagram: "NASA’s Kepler mission made a groundbreaking discovery: the Kepler 47 system, the first known planetary system where multiple planets orbit a pair of stars. Located 4,900 light-years away, this discovery proves that more than one planet can form and persist in the gravitationally stressful environment of a binary star. This system hosts two planets: Kepler 47b, a sweltering inner world, and Kepler 47c, an outer gaseous giant slightly larger than Neptune. Crucially,

Using Kepler's Third Law to Find the Period of a Planet's Orbit around a Star | Physics | Study.com