Cover of book Welcome to Mars: Making a Home on the Red Planet by Buzz Aldrin

Welcome to Mars: Making a Home on the Red Planet

Total words: 139
Unique words: 444

Cover of book Mission to Mars: My Vision for Space Exploration by Buzz Aldrin

Mission to Mars: My Vision for Space Exploration

Total words: 545
Unique words: 933

Comet

Rating: +7 (from 7 votes)

Cover of book Comet by Carl Sagan

Comet

Total words: 506
Unique words: 545

Cover of book Murmurs of Earth: The Voyager Interstellar Record by Carl Sagan

Murmurs of Earth: The Voyager Interstellar Record

Total words: 848
Unique words: 706

Cover of book Scientific Creationism by Henry M. Morris

Scientific Creationism

Total words: 749
Unique words: 920