Earth‑like planet with a locked rotation
LHS 3844b is slightly larger than Earth and orbits a red dwarf star called LHS 3844, located roughly 48.5 light‑years away. The planet’s rotation period matches its orbital period, causing the same hemisphere to always face the star.
Consequences of synchronous rotation
This tidal locking results in continuous stellar illumination on the dayside, driving surface temperatures to extreme highs, while the opposite hemisphere remains in perpetual darkness, cooling toward absolute zero.
Implications for habitability
The stark temperature contrast poses serious challenges for life. The dayside may be too hot for liquid water, and the nightside may be so cold that molecular motion effectively ceases. Researchers are investigating whether atmospheric circulation or internal heat could create temperate niches.
Future observations
Planned observations with space‑based telescopes aim to characterize the planet’s atmosphere and assess any heat‑redistribution mechanisms. These studies will help determine whether tidally locked exoplanets can host environments suitable for life.