Explore This SectionScienceExoplanetsGJ 581...Exoplanets HomeExoplanets OverviewExoplanets FactsTypes of ExoplanetsStarsWhat is the UniverseSearch for LifeThe Big QuestionsAre We Alone?Can We Find Life?The Habitable ZoneWhy We SearchTarget Star CatalogDiscoveriesDiscoveries DashboardHow We Find and CharacterizeMissionsPeopleExoplanet CatalogImmersiveThe ExoplaneteersExoplanet Travel Bureau5 Ways to Find a PlanetStrange New WorldsUniverse of MonstersGalaxy of HorrorsNewsStoriesBlogResourcesGet InvolvedGlossaryEyes on ExoplanetsExoplanet WatchMoreMultimediaExEP GJ 581 bUnable to render the provided sourceGJ 581 b is a Neptune-like exoplanet that orbits an M-type star. Its mass is 15.8 Earths, it takes 5.4 days to complete one orbit of its star, and is 0.04061 AU from its star. Its discovery was announced in 2005. Keep Exploring Discover More Topics From NASA Search for Life Stars Universe Black Holes
