Proxima Centauri, otherwise known as Alpha Centauri C, V645 Centauri and Gliese 551, is the smallest star of the trinary system Rigel Kentaurus (Otherwise known as Alpha Centauri), orbiting at roughly 0.218 light years from it's sister stars and 4.3 light years from planet Earth. The red dwarf star is more popularly known as the closest star to Earth, home world of the Humans, and as such was the target for early explorations and experiments at the very beginning of interstellar travel.
The star was first known to humanity by 1915 CE SST (Solar Standard Time), discovered by Robert Innes. Alpha Centauri A and B, the two, brighter stars of the system had been known to the civilization previously for centuries, as they are some of the brightest stars from Sol. Proxima Centauri has one planet and completes one revolution around the major stars in the system every 535.789234 thousand years. The first humans to arrive in the system did so in 2061 CE, of which were the first humans to leave the influence of Sol.
The first indications of the exoplanet were found in 2013 by Mikko Tuomi of the University of Hertfordshire from archival observation data. To confirm the possible discovery, the European Southern Observatory launched the Pale Red Dot project in January 2016. On 24 August 2016 the team of 31 scientists from all around the world, led by Guillem Anglada-Escudé of Queen Mary University of London, confirmed the existence of Proxima Centauri B through their research, published in a peer-reviewed article in Nature.