The Tidally Locked Rocky Surface of Exoplanet Proxima Centauri b
Proxima Centauri b resides in a state of permanent gravitational synchronization with its parent red dwarf star. Located a mere 4.2 light-years from the solar system, this terrestrial world offers a stark study in extreme atmospheric and orbital mechanics. Because the orbital period is perfectly synchronized with its rotational period, one hemisphere remains perpetually bathed in the dim, crimson radiance of the host star, while the opposing side is locked in an eternal, frozen night. This tidal locking dictates every geological and meteorological process occurring across its surface. The physical composition of Proxima Centauri b is estimated to be largely rock, with a mass approximately 1.17 times that of Earth. Its proximity to its host star—an M-type dwarf—subjects the body to significant tidal forces. Unlike worlds with rapid rotation that redistribute solar energ...