Related Clues:

• Pop astronomer Carl
• Cosmologist Carl
• Astronomer whose show won three Emmys and a Peabody
• "Billions & Billions" author Carl
• Carl who said "billions and billions . . ."
• Author of ''Cosmos'' and ''Comet''
• "Broca's Brain" author
• Carl who influenced Neil DeGrasse Tyson
• He advised Nye, ''Focus on pure science''
• ''Cosmos'' author, Carl
• "The Earth is a very small stage in a vast cosmic arena" speaker
• He said 'If you wish to make an apple pie from scratch, you must first invent the universe'
• Carl of 'Cosmos'
• 'Cosmos' host Carl
• Carl who hosted the original 'Cosmos'