How Far Away Is the Proxima Centauri Star From Earth?

How Far Away Is the Proxima Centauri Star From Earth?

Proxima Centauri is the closest star to the solar system, located just over 4 light years from Earth. Proxima Centauri, along with its stellar companions Alpha Centauri A and B, form a trinary star system.

First discovered in 1915 by Robert Innes, Proxima Centauri is considerably smaller than the sun, with only a little more than a 10th the mass and diameter. Proxima Centauri has a low luminosity and is not visible without the aid of instruments. The star is quite close to its neighbors, and their respective orbits leave a distance of only one-fifth of a light year between them.