The Proxima Centauri exoplanet, unlike Earth, is tidally locked to its parent star, always showing it the same face. (Like our Moon!)
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Most accurate to say that Proxima b is *likely* to be tidally locked to its parent star. Why is this?
Tidal forces increase greatly as distance decreases. Proxima b is very close to its parent, so tidal forces on it are very strong.
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So little knowledge yet to state anything not speculative about exoplanets, except they are exciting cosmic facts, or are they?
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