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First Tidally Locked Super-Earth Exoplanet Confirmed

First tidally locked exoplanet super-Earth confirmed
Observed dayside brightness temperature of LHS 3844b (red; 1σ range), vs. the planet’s theoretical dayside equilibrium temperature for two different rotation states (solid curves). The blue curve assumes pseudo-synchronous rotation, the green curve assumes Mercury-like 3:2 rotation. Shaded blue and green regions indicate the effect of increasing or decreasing LHS 3844b’s tidal dissipation efficiency by 1 order of magnitude. Credit: The Astrophysical Journal (2024). DOI: 10.3847/1538-4357/ad2077

An international team of astronomers and astrophysicists has confirmed the first known observance of a tidally locked super-Earth exoplanet...

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