What is Alpha Centauri?

Alpha Centauri is the closest star system on Earth except our own. It's a trio of stars: Alpha Centauri, Beta Centauri and Proxima Centauri. The first two are often referred to as Centauri A and Centauri B, while the last one is Centauri C. Alpha Centauri is a yellowish white dwarf star with about 10% greater mass than our sun. Beta Centauri is slightly smaller, at approximately 90% of solar weight and produces less heat and emits an orange -yellow white glow. Proxima Centauri is a small red dwarf, orbiting two more at a long distance. This red dwarf is the closest star for us except the sun. The whole system is 4.2 - 4.4 light years from Earth. The stem ship, which travels with 10%, the speed of light, perhaps driven by a nuclear pulse engine, would achieve Alpha Centauri in just 50 years. It is likely that the system has its own planets, although none of them have detected yet. This is comparable to the distance between the sun and Saturn when they are closest and between the sun and Pluto nejvíce distant. Both stars are about five to six billion years old, just like our Sun.

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The Red Dwarf Proxima Centauri, the ejection, weighs only 1/10 of the sun and burns its nuclear fuel much slower accordingly, which means it is less bright and hot. In fact, the only reason we can observe this red dwarf at all that it is so close to our domestic system. Proxima Centauri circulates beta and alpha centauri at a distance of 11,000 AU, or about 0.21 light -years, which is 1/20 path between the Sun and Alpha Centauri. Initially, we were not sure whether the proxima should be considered the back of the same star system, but the observation showed that it orbits around the binary center and shares approximately the same movement in the space as the rest of the star system.