The region around a star where liquid water could exist on a planet's surface, often called the Goldilocks zone. It varies with the star's size and temperature. Finding exoplanets here is key to the search for extraterrestrial life.
A planet orbiting a star outside our solar system. Thousands have been found since the first confirmed discovery in 1992...
A massive, luminous sphere of hot gas held together by gravity, generating energy through nuclear fusion. Stars range fr...
A technique for detecting exoplanets by measuring a star's dimming as a planet passes in front. The most successful dete...
Dive deeper into habitable zone and related concepts on Cosmos Observatory.