Steven Squyres talk, National Portrait Gallery Dr. Steven Squyres speaks at the National Portrait Gallery about his pioneering role in launching unmanned missions to Mars. Squyres is the principal scientist of NASA's Mars Exploration Rover (MER) mission, launched in 2003.
The series "Duplicity as Identity" consists of nine images in which the artist overlays a photograph of herself onto one of her father, posed identically and taken at approximately the same age. Martínez-Cañas then creates incremental mixes of her and her father that go from 10 percent of his image over 90 percent of hers all the way to 10 percent of hers over 90 percent of his, confounding their identities into one.