Proxima Centauri
Proxima Centauri has been the closest star to the Sun for about the last 32,000 years. Barnard's Star will make its closest approach to the Sun around AD 11,700, when it approaches to within about 3.8 light-years. However, at that time, it will not be the nearest star, since Proxima Centauri will then have moved even closer to the Sun. Six stars will come closer to Earth in the next 45,000 years.