Explore This SectionScienceExoplanetsTOI-178 dExoplanets 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 TOI-178 dUnable to render the provided sourceTOI-178 d is a Neptune-like exoplanet that orbits a K-type star. Its mass is 3.01 Earths, it takes 6.6 days to complete one orbit of its star, and is 0.0592 AU from its star. Its discovery was announced in 2021. Keep Exploring Discover More Topics From NASA Search for Life Stars Universe Black Holes