https://en.wikipedia.org/wiki/Proxima_Centauri_b
Proxima Centauri b (also called Proxima b[7][8]) is an exoplanet orbiting within the habitable zone of the red dwarf star Proxima Centauri, the closest star to the Sun.[9][10] It is located about 4.2 light-years (1.3 parsecs, 40 trillion km, or 25 trillion miles) from Earth in the constellation of Centaurus. It is the closest known exoplanet to the Solar System and the closest potentially habitable exoplanet known.
As a side note, I find it interesting how we on the planet Earth go about naming just about everything in the universe around us with something - as if it's ours to name.
That always seemed a little arrogant to me. On the other hand, maybe there's a tacit assumption that these names are merely placeholders till we actually encounter other sapient life elsewhere and it turns out they have a better and perhaps more accurate naming convention.
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