Gliese 667Cc, a potential habitable exoplanet 22 light-years away and at least 4.5 times Earth's mass, orbits its cooler red dwarf star in 28 days but may be affected by stellar flares.
KEPLER-22B
Kepler-22b, a super-Earth 600 light-years away and 2.4 times Earth's size, it orbits its smaller colder G-class star in 290 days within the habitable zone, though its composition remains unclear.
KEPLER-69C
Kepler-69c is a planet 70% larger than Earth and 2,700 light-years away. It orbits its star every 242 days within the habitable zone of its 80% sun-like star, though its composition remains unknown.
KEPLER-186F
Kepler-186f, about 500 light-years away and at most 10% larger than Earth, orbits on the outer edge of its red dwarf star's habitable zone, receiving just one-third of the energy Earth gets from the sun.
KEPLER-452B
Discovered in 2015, Kepler-452b, a potentially rocky planet 60% larger than Earth, orbits its sun-like star in the habitable zone, 1,400 light-years away, with a 385-day orbit.
PROXIMA CENTAURI B
Proxima Centauri b, Earth's closest exoplanet, is in the habitable zone but faces intense ultraviolet radiation due to its close proximity and short orbit.