This book is a Weekend Pocketbook on Everything You Should Know About Our First Ever Message to Aliens, the story of humanity's first deliberate attempt to announce itself to the cosmos. Written in everyday language, we explore how scientists tried to speak across 25,000 light-years

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So, what did Earth say to the universe?

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We begin with the Arecibo Message, sent in 1974 from the giant radio telescope in Puerto Rico toward Messier 13, the Great Hercules Cluster. We explore why scientists chose radio waves, why mathematics seemed like the safest shared language, and how a simple grid of binary digits was designed to describe humanity in the shortest possible manner.

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We talk about the early search for alien signals. From Nikola Tesla's hopes about Mars to the Big Ear radio telescope, Project Ozma, the Wow! Signal, Frank Drake, Carl Sagan, and the Drake Equation, we ask why the universe looks so promising for life, yet remains so silent.

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The book also follows the strange moment when an "answer" appeared decades late in a field near the Chilbolton radio telescope.

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Should we only listen, or should we speak to the universe? Who has the right to represent Earth? And if another civilization hears us, will contact be the beginning of wonder, danger, or a conversation we are not yet ready to have?

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The Arecibo Message

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