Getting back to the point, the closest star to the Earth,many zeroes! So a ray of light leaving Proxima Centauri will take 4.243 Earth years Proxima Centauri is about 4.243 light years or 3.97 x 1013 km! That is too to reach us! Another way of getting an idea about the That makes is 270,000 times more distant than Sun. distance is comparing it with the fact that light from the Sun only takes 8.3 minutes!
Nature being that of a flare star, largely rules out the possibility of life arising on any planets surrounding it. Read more on star astronomy. Though its less massive than the Sun, brightness which keeps on waxing and waning with the activity of its magnetic field.
No planets have been discovered orbiting it so far. Also its its density is 40 times more! The reason it is called a 'Flare Star' is its volatile is cooler at the surface than our Sun
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