billions and billions. Admit it, you say that in your head with the Carl Sagan voice.
Brilliant and provocative, it traces today's knowledge and scientific methods to their historical roots, blending science and philosophy in a wholly energetic and irresistible way.
Bilhões e Bilhões - Carl Sagan
Watch Carl Sagan's Vision of Human Space Exploration Come to Life - Popular Mechanics
Cosmos is one of the bestselling science books of all time. In clear-eyed prose, Sagan reveals a jewel-like blue world inhabited by a life form that is just beginning to discover its own identity and to venture into the vast ocean of space.
You Are Stardust by Elin Kelsey, http://www.amazon.com/dp/1926973356/ref=cm_sw_r_pi_dp_dEjsrb1HFKB92
Cosmos | Carl Sagan (2013)
Hitchhiker's Guide to the Galaxy