Space for Thought
Sir:
Your Science article "Life on a Billion Planets" [March 3], is plain horse sense. Who the hell are we (on this planet) to believe we are the only humans in all the cosmic world? Astronomer Struve says: "It is perfectly conceivable that some intelligent race meddled once too often with nuclear laws and blew themselves to bits." This is just about what may hit us—if we keep monkeying around with nuclear fission.
VINCENT V. DANIELS Rutland Heights, Mass.
Sir:
Our earth is at least 2 billion years old; records have been...
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