by Boyle, Alan, 1954-
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How old is the universe?
How I killed Pluto and why it had it coming
Asteroids
Extraterrestrial : the first sign of intelligent life beyond Earth
Is Pluto a planet? : a historical journey through the solar system
Under alien skies : a sightseer's guide to the universe
Extreme cosmos : a guided tour of the fastest, brightest, hottest, heaviest, oldest, and most amazing aspects of our universe
How it began : a time-traveler's guide to the universe
English
Pluto (Dwarf planet)
Solar system.