Block Starlight to See Planets - Universe Today
University of Arizona researchers have developed an "optical vortex mask" that will block the starlight from a bright star, so that dim objects nearby the star can be observed. This mask could theoretically be attached to a powerful observatory, to completely mask the light from the star, and allow astronomers to see planets 10 billion times less bright. Future space missions, like the Terrestrial Planet Finder might use a similar technique as well.