Alpha Centauri - Wikipedia
The Alpha Centauri system is the closest star system to Earth—with Proxima Centauri being the closest of the system's stars—which has given it a special position in science fiction literature.
Alpha Centauri | Distance, Planets, & Facts | Britannica
Jan 7, 2026 · Alpha Centauri, triple star system that contains Proxima Centauri, the closest star to the Sun, about 4.2 light-years distant. The system is the third brightest star in the sky. The nearest …
Alpha Centauri: A Triple Star System about 4 Light Years from Earth
Jun 6, 2018 · Alpha Centauri is a triple star system located just over four light years, or about 25 trillion miles, from Earth. While this is a large distance in terrestrial terms, it is three times closer than the …
Alpha Centauri: Nearest Star System to the Sun
Mar 5, 2023 · Alpha Centauri is a star system with components 4.2 to 4.4 light-years from Earth and comprises three stars. It is the closest star system to the solar system, and one of its stars is the …
Alpha Centauri: Nearest Star System to the Sun | Star Facts
Sep 9, 2025 · Alpha Centauri (α Cen) is a triple star system located 4.344 light-years away in the constellation Centaurus. It is the nearest star system to the Sun and the third brightest stellar point of …
Alpha Centauri, the star system closest to our sun - EarthSky
Apr 16, 2025 · Alpha Centauri is the 3rd-brightest star in our night sky – technically a trio of stars – and the nearest star system to our sun. In fact, through a small telescope, the single star we see as...
Alpha Centauri System | Facts, Information, History & Definition
Dec 6, 2019 · Alpha Centauri is a triple star system. It is the closest star and planetary system to our Solar System. Alpha Centauri was discovered in 1915, while it’s only confirmed planet, Proxima …
Alpha Centauri, sun's closest stellar neighbor, likely harbors giant ...
Aug 7, 2025 · Visible only from Earth's Southern hemisphere, the Alpha Centauri system is made up of the binary Alpha Centauri A and Alpha Centauri B, both sun-like stars, and the faint red dwarf star …
Alpha Centauri in data from DSS, Hubble and Webb (panel)
Aug 7, 2025 · Alpha Centauri A is the third brightest star in the night sky, and the closest Sun-like star to Earth. The ground-based image from DSS shows the triple system as a single source of light, while …
NASA SVS | Alpha Centauri Stellar System
Jun 13, 2023 · At 4.3 light-years away, Alpha Centauri A and B are the nearest Sun-like stars to our solar system. They orbit with Proxima Centauri as a triple star system.