Leading astronomers are hunting for alien messages in supernova explosions. Here's why - BBC Science Focus Magazine

Astronomers in the US think extra-terrestrials could take advantage of the spectacular cosmic events to inform us of their existence.

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Professor Abraham (Avi) Loeb

Will man ever leave the solar system?

Harvard professor Avi Loeb says metallic spheres are alien in origin

Hunting for aliens. Here's how astronomers looking for life

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The Science of Star Wars by Jeanne Cavelos - Ebook

20 Best Outer Space Books of All Time - BookAuthority