Advertising our existence (Image: Jess Alford/Getty)From New Scientist:
The human race first deliberately advertised its existence on the outer panels of space probes, some of which were engraved with codes and images containing information about itself. These immediately prompted arguments about how much we should give away about ourselves.
However, if we really want to break the ice with our cosmic neighbours, it will probably be by sending messages that travel at the speed of light, not at the speed of a Pioneer probe.
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