← Heros

Carl Sagan

1934–1996

Astronomer and the great popularizer of science, with Cosmos.

Ideas

The cosmic perspective
Seeing Earth as one small world among billions should make us kinder to each other and more careful with it.
The baloney detection kit
The Demon-Haunted World's toolkit for spotting bad arguments: independent confirmation, rival hypotheses, falsifiability.
We are star stuff
The atoms in our bodies were made in stars, so the universe is not something we just look at. We are part of it.
Reaching out
He helped design the Pioneer plaques and the Voyager Golden Record, and championed the search for extraterrestrial intelligence.

In their words

“Extraordinary claims require extraordinary evidence.”

Cosmos

“The cosmos is within us. We are made of star-stuff.”

Cosmos

“Look again at that dot. That's here. That's home. That's us.”

Pale Blue Dot

Start with

Carl Sagan on Wikipedia

Photo: NASA/JPL, Public domain, via Wikimedia Commons; cut out and graded black and white.

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