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Alpha Centauri A

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Photo of Alpha Centauri Proxima Centauri, the closest star to our own, is still 40,208,000,000,000 km away. (Or about 268,770 AU.) When we talk about the distances to the stars, we no longer use the AU, or Astronomical Unit; commonly, the light year is used. A light year is the distance light travels in one year - it is equal to 9.461 x 1012 km. Alpha Centauri A & B are roughly 4.35 light years away from us. Proxima Centauri is slightly closer at 4.25 light years.
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The closest star system to the Sun, Alpha Centauri, which contains 3 stars: Alpha Centauri A (slightly larger than the Sun), Alpha Centauri B (slightly smaller than the Sun) & Proxima Centauri (tiny Red Dwarf). Alpha Centauri A & B are 4.3 light years away and Proxima Centauri is the closest at just 4.2 light years away. However, given that Proxima Centauri is small and dim it can't be seen since it is out-shined by its 2 larger siblings.
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Alpha Centauri A is similar to the Sun, except it is 23 percent larger and has 151.9 times its brightness. #readmore #learnmore #astronomy #blogpost #stars #universe
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