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From two-time Caldecott Winner author-illustrator Sophie Blackall! If You Came to Earth is a glorious guide to our home planet, and a call for us to take care o

Are alien civilizations really possible? If extraterrestrials exist, where are they? How likely is it that somewhere in the universe an Earth-like planet suppor

Describes numerous encounters with unidentified flying objects and their crews and suggests possible origins of these interstellar visitors.

RESISTANCE IS ALL For years, writers and filmmakers have speculated about the possibility of the Earth being invaded by aliens from another planet. But what if