Kirsten Dunst and Marlee Matlin lend voices to 'Cosmos': Watch

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If something sounded a little familiar during Sunday's (April 27) episode of " Cosmos: A Spacetime Odyssey" on FOX, that might be because two noted actresses lent their voices to the program.

Kirsten Dunst voiced Cecilia Payne, a British astronomer responsible for discovering the chemical composition of stars. Marlee Matlin also appeared as the voice of American astronomer Annie Jump Cannon, who first catalogued the spectral characters of stars.

"Yes, that's me as the voice of Annie Jump Cannon on #Cosmos," Matlin tweets. "Thanks to my friend @SethMacFarlane." You can watch their episode of "Cosmos," "Sisters of the Sun," above.
Photo/Video credit: FOX