Sasha Engelmann is Lecturer in GeoHumanities at Royal Holloway, University in London. She collaborates with contemporary artists to explore environmental sensing and politics. Since 2014 she has collaborated with Studio Tomás Saraceno on a number of projects including the Aerocene. In current writing and teaching endeavours she is working on amateur radio and radio based listening, with particular interest in the relations between DIY radio technologies, communities and cosmic forces. Her callsign is M6IOR.