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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Replying to @NASAWebb
how can you tell the planet is locked, like our moon?
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Replying to @katentek
Don't know 100% yet. It's so close to its parent star (which is way more massive), the tidal forces at play make it likely.
8:23 AM - 26 Aug 2016
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