Proxima Centauri b is an exoplanet that orbits Proxima Centauri, a red dwarf star that is part of the Alpha Centauri star system. The planet was discovered in August 2016, and it is located just 4.24 light-years away from Earth, making it the closest known exoplanet to us. Proxima Centauri b is approximately 1.3 times the size of Earth, and it orbits its star at a distance of about 0.05 astronomical units (AU), which is much closer than the distance between Mercury and the Sun. The planet's orbi
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Is Proxima b a Second Earth? - Orbiting the red dwarf star Proxima Centauri, it's the closest potentially habitable world we've discovered yet. Despite its small size and proximity to its active star, Proxima b sits within the star's habitable zone, where liquid water could theoretically exist on its surface. This raises the tantalizing possibility that it could harbor life, even microbial life similar to what emerged on early Earth. While challenges remain, like the intense radiation from its h
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An Earth-like atmosphere may not survive Proxima b's orbit - NASA …
Jul 31, 2017
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Orbiting the red dwarf star Proxima Centauri, it's the closest potentially habitable world we've discovered yet. Despite its small size and proximity to its active star, Proxima b sits within the star's habitable zone, where liquid water could theoretically exist on its surface. This raises the tantalizing possibility that it could harbor life, even microbial life similar to what emerged on early Earth. While challenges remain, like the intense radiation from its host star and the tidal locking
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