Carl Sagan - This astronomer is the author of Pale Blue Dot.
Scientists - The main "heroes" of Pale Blue Dot.
Theologians - The author presents this group as standing in the way of technological and moral progress.
God - The author emphasizes that this individual appears not to have designed the universe.
Galileo Galilei - This astronomer publicized the idea that the Earth revolves around the sun and was punished with permanent house arrest as a result.
Kuiper - This astronomer was the author's graduate adviser and friend.
Sagan's Students - Many of these individuals studied stars and planets and the moon Titan in particular.
Astronauts - The author often compares members of this group to the great explorers of the past.
NASA - This is the government agency primarily responsible for space exploration in the United States.
SETI/META - These organizations search for signs...
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