Post History
This question has already been debated by exo-astronomers. The best answer they could come up with (using 1974 technology) was the Arecibo Message. The details might change, but the essential ide...
Answer
This question has already been debated by exo-astronomers. The best answer they could come up with (using 1974 technology) was the Arecibo Message. The details might change, but the essential ide...