Carl Sagan — "Extraordinary claims require extraordinary evidence."
Extraordinary claims require extraordinary evidence.
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More from Carl Sagan
"The universe is not only stranger than we imagine, it is stranger than we can imagine."
"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pie were made in the interiors of collapsing stars. We are made of starstuff."
"The greatest discoveries are often made by accident."
"We are travelers on a cosmic journey, stardust, swirling and dancing in the eddies and whirlpools of infinity. Life is eternal. We have stopped for a moment to encounter each other, to meet, to love, …"
"The universe is a machine for the making of gods."