4 ms·
Take a coherent ray of light, shine it with Morse code encoded information on the green zone of a star systems predicted planets position, ahead of time. Repeat
by Pica_soO 9y ago
Take a coherent ray of light, shine it with Morse code encoded information on the green zone of a star systems predicted planets position, ahead of time. Repeat with a realistic rhythm of generations.
The best beacon is a automated light house.