tidal lock

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tidal lock

[′tīd·əl ′läk]
(civil engineering)
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These results suggest that the process of tidal locking is a major factor in the evolution of most of the potentially habitable exoplanets to be discovered in the near future," Barnes said.
This is because tidal locking of planets to their stars has the potential to affect its habitability.
Tidal locking is possible, Crockett says, "though there's an active debate about whether that would be OK for habitability or not.
Ofer Cohen of the Harvard-Smithsonian Center for Astrophysics said that the red-dwarf planet faces an extreme space environment in addition to other stresses like tidal locking.
These effects may include tidal heating, synchronous rotation, and tidal locking, which can produce a significant effects on the planets' seasons and geologic activity.
For planets so close, the star's gravity slows down their spin so that one side always faces the star, a circumstance known as tidal locking.
Leconte and colleagues used computer simulations to determine that heat in a planet's atmosphere may prevent tidal locking.
Tidal locking occurs when a body's rotation synchronizes to its orbit of the larger host, due to the effects of gravity.
While tidal locking is a bad thing for planets, half of the planet would receive all the light while the other half would be freezing, it may be beneficial to a binary star system.