Rare Giant - Star HR 5171

Wallpaper Description:

This image is an artist's impression showing the yellow hypergiant star HR 5171. It is a very rare type of star with only a dozen known in our galaxy. I's size is over 1300 times that of our Sun--one of the largest ten stars found so far. Observations with ESO's Very Large Telescope Interferometer have shown that it is actually a double star, with the companion in contact with the main star.
Credit: ESO