Nearest star to Earth ‘Proxima centauri’

Our curiosity arouses when we think about which star is near our solar system. Pluto is the farthest dwarf planet from the sun. When we move away from our solar system there is dark space out there.

Moving towards the southern hemisphere, in the Centaurs constellation after covering 4.2465 light years distance we came across a star which is called Proxima Centauri. This star is closest to our solar system. It was discovered in 1915 by Robert Innes. Its mass is 8.2 times less than the sun.


Proxima Centauri is located in a region of a three-star system. Proxima Centauri is the dimmest star in the system. Other stars which are brighter than proxima are called Alpha Centauri.

Alpha Centauri is 4.35 light years away from our solar system this is why they are not called the closest star but Proxima Centauri which is 4.2465 light years away.

The Voyager 1 spacecraft is on an interstellar mission. It is traveling away from the Sun at a rate of 17.3 km/s. If Voyager were to travel to Proxima Centauri, at this rate, it would take over 73,000 years to arrive. If we could travel at the speed of light, an impossibility due to Special Relativity, it would still take 4.22 years to arrive.

In 2016, an exoplanet named Proxima Centauri b was discovered orbiting Proxima Centauri. It is a rocky planet with a mass similar to Earth and orbits within the star’s habitable zone, where conditions may be suitable for liquid water to exist on its surface. Proxima Centauri b has since been a focus of research in the search for potentially habitable exoplanets. 

The planet is a super-Earth, with a mass at least 1.3 times that of Earth, and it orbits its star in just 11.2 days. Proxima Centauri b is located within the habitable zone of its star, meaning that it could potentially support liquid water on its surface. However, the planet is also very close to its star, and it is bombarded with high-energy radiation from flares. It is therefore not clear whether Proxima Centauri b is actually habitable.

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