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Proxima Centauri is the closest star to the Sun. Home to at least two planets and the possible source of a mysterious radio signal, there's a lot to learn about this star.The Sun's closest stellar neighbor is located in the Centaurus constellation, roughly 38 trillion kilometers away.Read on to learn nine interesting facts about this star.
This means that Proxima Centauri emits significantly less energy in the form of light compared to the Sun. Over 85% of the energy it emits is in the form of infrared radiation.star, and these stars are known for their lower luminosity and cooler temperatures compared to yellow dwarf stars like the Sun. This reduced luminosity is one of the reasons why Proxima Centauri is much dimmer in the sky and not visible to the naked eye from Earth.
Alpha Centauri A is 1.1 times the mass and 1.5 times the luminosity of the Sun, while Alpha Centauri B is smaller and cooler, at 0.9 times the Sun's mass and less than 0.5 times its luminosity. They share an eccentric elliptical orbit with a 79-year orbital period, so that the distance between them changes, ranging from about the distance between Pluto and the Sun to roughly the distance between Saturn and the Sun.Proxima Centauri is known for its frequent flare activity.
In stars with convective interiors, energy is transported from the core to the outer layers through the motion of hot, buoyant plasma. In the case of Proxima Centauri, its weak stellar winds are a result of its low mass and lower energy output compared to larger stars like the Sun. These factors contribute to a less vigorous expulsion of particles, making its stellar winds considerably weaker.
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