Proxima Centauri is a red dwarf in the Alpha Centauri system. It's so dim that you can't see it with the naked eye-you need a telescope, and you also need to be in the Southern Hemisphere. In fact, of all the stars and brown dwarfs that are within 16.3 light-years of our solar system, only 12% of them can be seen without the aid of technology.
The Closest Star To Our Sun Is Still Light-Years Away
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Key Facts In This Video
Alpha Centauri is a system of three stars. 00:32
The New Horizons spacecraft travels at nearly 60,000 km/hr (37,282 mph). 01:23
Sirius has twice the mass of the sun, and is the brightest star in the night sky. 02:03