A polar starspot can be seen on the star zeta Andromedae. The placement of the spot shows how the magnetic activity of this large, fast-spinning star differs from the present-day magnetic activity of our sun. This image is shaped in this way because it's a projection of the star that allows researchers to see the star's entire surface. Images courtesy: Rachael Roettenbacher and John Monnier

A starspot can be seen in a mid latitude on the star zeta Andromedae. To generate these relatively close-up images, astronomers used a technique that combines the light from six telescopes into one superzoom lens. zeta Andromedae has a radius 15 times larger than the sun. For comparison's sake, the sun would be about the size of the starspot you can see here. This image is shaped in this way because it's a projection of the star that allows researchers to see the star's entire surface.

Astronomers have taken a close-up timelapse image of the fast-rotating star zeta Andromedae. Starspots can be seen clearly.