Billions and Billions

"Billions and Billions" is a phrase popularized by the late astrophysicist Carl Sagan, primarily in reference to the vastness of the universe and the immense numbers involved in scientific concepts. It gained public attention through Sagan’s television series "Cosmos" and his book "Pale Blue Dot." The phrase is often used colloquially to emphasize large quantities or to denote something on an astronomical scale.