This arti­cle is the first fol­low-on to a series on first con­tact.     This is part of a series of arti­cles about sci­ence fic­tion world build­ing: From the moment the first exper­i­ments with radio began, the pos­si­bil­i­ty of detect­ing alien trans­mis­sions became real. If there was an advanced civ­i­liza­tion on Mars, it would be […]