 Marlee Matlin, Academy Award Winner for Best Actress for her performance in the 1986 film "Children of a Lesser God", and the only deaf performer to win a Best Actress Oscar, has collaborated with "Cosmos" executive producer Seth MacFarlane before in "Family Guy" where she voiced the character of Stella, Peter Griffin's deaf co-worker at Pawtucket Brewery.Here, Matlin provides the voice of Annie Jump Cannon, a deaf astronomer at Harvard who, along with Edward C. Pickering, is credited with the creation of the Harvard Classification Scheme, which was the first serious attempt to organize and classify stars based on their temperatures.The episode's premiere on Fox brought a 1.4/4 in the 18-49 rating/share, with an audience of 3.66 million American viewers.