Kepler-186b (also known as KOI-571.03) is an exoplanet located around 582 light-years away from Earth. It orbits a red dwarf named Kepler-186, the same star system discovered by the Kepler space telescope.

Discovery: Kepler-186b was discovered by the Kepler Science team and is the innermost and smallest planet of its system.

Orbital Characteristics:

• Orbital period: Just under 4 Earth days
• Located very close to its parent star
• Tidally locked, with one hemisphere in constant daylight and the other in eternal darkness

Physical Characteristics:

• Not suitable for life due to proximity to its star

The other planets in the system include Kepler-186c, d, e, and f. Only Kepler-186f is located within the habitable zone, making it the best candidate for potential life.