TrES-2b: Darkest Exoplanet Known, Reflects Less Than 1% of Light

Astronomers continue to study TrES-2b, an exoplanet 750 light-years away, which reflects less than 1% of incident light, making it darker than coal. The finding, first reported in 2006, underscores the diversity of planetary albedos and informs models of hot Jupiter atmospheres. No new data or change in status is reported; the item is a feature recap.