The first image of surface features on a sun-like star

University of Michigan astronomers combined light from four widely separated telescopes to produce the first picture showing surface details on a sun-like star beyond our solar system. The image of the rapidly rotating, hot star Altair is the most detailed stellar picture ever made using an innovative light-combining technique called optical interferometry.
Article @ University of Michigan

Supporting Materials

Abstract: Imaging the Surface of Altair – Monnier et al.