Neutrinos from the neighbors

By Ashton Edwards
ScienceAstronomy
Alien_computer._Artwork_of_a_hypothetical_alien_life_form_in_the_shape_of_an_intelligent_computer_orbiting_a_parent_star.

Cosmic Lighthouse: The angular momentum in space-time around a rotating black hole can be tapped and used for extreme light amplification. With this, superintelligences over thousands of light years could draw attention to themselves – or build devastating gravitational bombs.
© Illustration: Science Photo Library/Lynette Cook

Ghost Particles and Gravitational Waves: Are They the Signal Carriers and Clocks of Super Civilizations?

by RÜDIGER VAAS

It is no coincidence that the search for extraterrestrial intelligence (SETI) began in the field of electromagnetic radiation. Because even a search for the completely foreign presupposes an ability to visualize what

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