Memory Game Exoplanet AdventureOnline version Explore the universe with these exoplanet-themed memory cards. Match the planets and their features to win! by Andrea Guevara Transit Method Habitable Zone Gaseous Atmosphere Hot Jupiter Proxima Centauri b Hot Jupiter Trappist-1 Trappist-1 Proxima Centauri b Kepler-186f Kepler-186f Habitable Zone Transit Method Super-Earth Super-Earth Gaseous Atmosphere Hot Jupiter Transit Method Transit Method Proxima Centauri b Habitable Zone Kepler-186f Gas Giant Super-Earth Kepler-186f Habitable Zone Proxima Centauri b Hot Jupiter TRAPPIST-1 Super-Earth Gas Giant TRAPPIST-1