Astronomers led by University of Hawaii Institute for Astronomy claim to have discovered an exoplanet three times of Jupiter's mass orbiting the star Kepler-88. The planet takes four Earth years to go around its star. Previously, two other exoplanets orbiting Kepler-88, Kepler-88 b and Kepler-88 c were discovered. Kepler-88 c, Jupiter-mass planet, takes 22 days to go around the star.